Home / 28,329.19-39,095.15-15,581.71

Finding the Fourth Proportional to 28,329.19, 39,095.15 and 15,581.71

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Solution

The fourth proportional to 28,329.19, 39,095.15 and 15,581.71 is: 21,503.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,329.19 : 39,095.15 = 15,581.71 : x
  2. Step 2: Convert to fraction form
    28,329.19/39,095.15 = 15,581.71/x
  3. Step 3: Cross multiply
    28,329.19x = 39,095.15 × 15,581.71
  4. Step 4: Simplify right side
    28,329.19x = 609,169,260.67
  5. Step 5: Solve for x
    x = 609,169,260.67/28,329.19
  6. Step 6: Final answer
    x = 21,503.24

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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.