Home / 28,504.29-39,335.63-15,929.04

Finding the Fourth Proportional to 28,504.29, 39,335.63 and 15,929.04

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Solution

The fourth proportional to 28,504.29, 39,335.63 and 15,929.04 is: 21,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,504.29 : 39,335.63 = 15,929.04 : x
  2. Step 2: Convert to fraction form
    28,504.29/39,335.63 = 15,929.04/x
  3. Step 3: Cross multiply
    28,504.29x = 39,335.63 × 15,929.04
  4. Step 4: Simplify right side
    28,504.29x = 626,578,823.70
  5. Step 5: Solve for x
    x = 626,578,823.70/28,504.29
  6. Step 6: Final answer
    x = 21,981.91

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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.