Home / 28,288,349,121.51-39,037,960,502.70-15,428,020,172.31

Finding the Fourth Proportional to 28,288,349,121.51, 39,037,960,502.70 and 15,428,020,172.31

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Solution

The fourth proportional to 28,288,349,121.51, 39,037,960,502.70 and 15,428,020,172.31 is: 21,290,688,952.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288,349,121.51 : 39,037,960,502.70 = 15,428,020,172.31 : x
  2. Step 2: Convert to fraction form
    28,288,349,121.51/39,037,960,502.70 = 15,428,020,172.31/x
  3. Step 3: Cross multiply
    28,288,349,121.51x = 39,037,960,502.70 × 15,428,020,172.31
  4. Step 4: Simplify right side
    28,288,349,121.51x = 602,278,442,121,224,257,536
  5. Step 5: Solve for x
    x = 602,278,442,121,224,257,536/28,288,349,121.51
  6. Step 6: Final answer
    x = 21,290,688,952.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.