Home / 15,535.28-21,438.48-8,461.72

Finding the Fourth Proportional to 15,535.28, 21,438.48 and 8,461.72

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Solution

The fourth proportional to 15,535.28, 21,438.48 and 8,461.72 is: 11,677.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.28 : 21,438.48 = 8,461.72 : x
  2. Step 2: Convert to fraction form
    15,535.28/21,438.48 = 8,461.72/x
  3. Step 3: Cross multiply
    15,535.28x = 21,438.48 × 8,461.72
  4. Step 4: Simplify right side
    15,535.28x = 181,406,414.99
  5. Step 5: Solve for x
    x = 181,406,414.99/15,535.28
  6. Step 6: Final answer
    x = 11,677.06

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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.