Home / 20,614.53-28,459.08-16,128.75

Finding the Fourth Proportional to 20,614.53, 28,459.08 and 16,128.75

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Solution

The fourth proportional to 20,614.53, 28,459.08 and 16,128.75 is: 22,266.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,614.53 : 28,459.08 = 16,128.75 : x
  2. Step 2: Convert to fraction form
    20,614.53/28,459.08 = 16,128.75/x
  3. Step 3: Cross multiply
    20,614.53x = 28,459.08 × 16,128.75
  4. Step 4: Simplify right side
    20,614.53x = 459,009,386.55
  5. Step 5: Solve for x
    x = 459,009,386.55/20,614.53
  6. Step 6: Final answer
    x = 22,266.30

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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.