Home / 21,772.66-32,657.08-15,421.28

Finding the Fourth Proportional to 21,772.66, 32,657.08 and 15,421.28

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Solution

The fourth proportional to 21,772.66, 32,657.08 and 15,421.28 is: 23,130.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,772.66 : 32,657.08 = 15,421.28 : x
  2. Step 2: Convert to fraction form
    21,772.66/32,657.08 = 15,421.28/x
  3. Step 3: Cross multiply
    21,772.66x = 32,657.08 × 15,421.28
  4. Step 4: Simplify right side
    21,772.66x = 503,613,974.66
  5. Step 5: Solve for x
    x = 503,613,974.66/21,772.66
  6. Step 6: Final answer
    x = 23,130.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.