Home / 20,663.34-28,505.85-14,985.60

Finding the Fourth Proportional to 20,663.34, 28,505.85 and 14,985.60

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Solution

The fourth proportional to 20,663.34, 28,505.85 and 14,985.60 is: 20,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.34 : 28,505.85 = 14,985.60 : x
  2. Step 2: Convert to fraction form
    20,663.34/28,505.85 = 14,985.60/x
  3. Step 3: Cross multiply
    20,663.34x = 28,505.85 × 14,985.60
  4. Step 4: Simplify right side
    20,663.34x = 427,177,265.76
  5. Step 5: Solve for x
    x = 427,177,265.76/20,663.34
  6. Step 6: Final answer
    x = 20,673.20

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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.