Home / 28,288,349,122.16-39,037,960,503.60-15,428,020,172.96

Finding the Fourth Proportional to 28,288,349,122.16, 39,037,960,503.60 and 15,428,020,172.96

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Solution

The fourth proportional to 28,288,349,122.16, 39,037,960,503.60 and 15,428,020,172.96 is: 21,290,688,953.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288,349,122.16 : 39,037,960,503.60 = 15,428,020,172.96 : x
  2. Step 2: Convert to fraction form
    28,288,349,122.16/39,037,960,503.60 = 15,428,020,172.96/x
  3. Step 3: Cross multiply
    28,288,349,122.16x = 39,037,960,503.60 × 15,428,020,172.96
  4. Step 4: Simplify right side
    28,288,349,122.16x = 602,278,442,160,756,490,240
  5. Step 5: Solve for x
    x = 602,278,442,160,756,490,240/28,288,349,122.16
  6. Step 6: Final answer
    x = 21,290,688,953.25

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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.