Home / 20,538.02-28,342.89-11,583.81

Finding the Fourth Proportional to 20,538.02, 28,342.89 and 11,583.81

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Solution

The fourth proportional to 20,538.02, 28,342.89 and 11,583.81 is: 15,985.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.02 : 28,342.89 = 11,583.81 : x
  2. Step 2: Convert to fraction form
    20,538.02/28,342.89 = 11,583.81/x
  3. Step 3: Cross multiply
    20,538.02x = 28,342.89 × 11,583.81
  4. Step 4: Simplify right side
    20,538.02x = 328,318,652.61
  5. Step 5: Solve for x
    x = 328,318,652.61/20,538.02
  6. Step 6: Final answer
    x = 15,985.89

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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.