Home / 15,540.12-21,448.68-10,235.40

Finding the Fourth Proportional to 15,540.12, 21,448.68 and 10,235.40

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Solution

The fourth proportional to 15,540.12, 21,448.68 and 10,235.40 is: 14,127.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.12 : 21,448.68 = 10,235.40 : x
  2. Step 2: Convert to fraction form
    15,540.12/21,448.68 = 10,235.40/x
  3. Step 3: Cross multiply
    15,540.12x = 21,448.68 × 10,235.40
  4. Step 4: Simplify right side
    15,540.12x = 219,535,819.27
  5. Step 5: Solve for x
    x = 219,535,819.27/15,540.12
  6. Step 6: Final answer
    x = 14,127.04

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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.