Home / 20,523.74-28,316.10-12,557.66

Finding the Fourth Proportional to 20,523.74, 28,316.10 and 12,557.66

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Solution

The fourth proportional to 20,523.74, 28,316.10 and 12,557.66 is: 17,325.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,523.74 : 28,316.10 = 12,557.66 : x
  2. Step 2: Convert to fraction form
    20,523.74/28,316.10 = 12,557.66/x
  3. Step 3: Cross multiply
    20,523.74x = 28,316.10 × 12,557.66
  4. Step 4: Simplify right side
    20,523.74x = 355,583,956.33
  5. Step 5: Solve for x
    x = 355,583,956.33/20,523.74
  6. Step 6: Final answer
    x = 17,325.50

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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.