Home / 20,697.17-28,557.77-13,537.58

Finding the Fourth Proportional to 20,697.17, 28,557.77 and 13,537.58

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Solution

The fourth proportional to 20,697.17, 28,557.77 and 13,537.58 is: 18,679.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.17 : 28,557.77 = 13,537.58 : x
  2. Step 2: Convert to fraction form
    20,697.17/28,557.77 = 13,537.58/x
  3. Step 3: Cross multiply
    20,697.17x = 28,557.77 × 13,537.58
  4. Step 4: Simplify right side
    20,697.17x = 386,602,885.52
  5. Step 5: Solve for x
    x = 386,602,885.52/20,697.17
  6. Step 6: Final answer
    x = 18,679.03

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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.