Home / 28,411.65-39,167.15-19,887.48

Finding the Fourth Proportional to 28,411.65, 39,167.15 and 19,887.48

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Solution

The fourth proportional to 28,411.65, 39,167.15 and 19,887.48 is: 27,416.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.65 : 39,167.15 = 19,887.48 : x
  2. Step 2: Convert to fraction form
    28,411.65/39,167.15 = 19,887.48/x
  3. Step 3: Cross multiply
    28,411.65x = 39,167.15 × 19,887.48
  4. Step 4: Simplify right side
    28,411.65x = 778,935,812.84
  5. Step 5: Solve for x
    x = 778,935,812.84/28,411.65
  6. Step 6: Final answer
    x = 27,416.07

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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.