Home / 28,121.59-38,808.61-15,547.15

Finding the Fourth Proportional to 28,121.59, 38,808.61 and 15,547.15

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Solution

The fourth proportional to 28,121.59, 38,808.61 and 15,547.15 is: 21,455.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.59 : 38,808.61 = 15,547.15 : x
  2. Step 2: Convert to fraction form
    28,121.59/38,808.61 = 15,547.15/x
  3. Step 3: Cross multiply
    28,121.59x = 38,808.61 × 15,547.15
  4. Step 4: Simplify right side
    28,121.59x = 603,363,416.78
  5. Step 5: Solve for x
    x = 603,363,416.78/28,121.59
  6. Step 6: Final answer
    x = 21,455.52

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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.