Home / 20,349.93-28,083.80-12,793.40

Finding the Fourth Proportional to 20,349.93, 28,083.80 and 12,793.40

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Solution

The fourth proportional to 20,349.93, 28,083.80 and 12,793.40 is: 17,655.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.93 : 28,083.80 = 12,793.40 : x
  2. Step 2: Convert to fraction form
    20,349.93/28,083.80 = 12,793.40/x
  3. Step 3: Cross multiply
    20,349.93x = 28,083.80 × 12,793.40
  4. Step 4: Simplify right side
    20,349.93x = 359,287,082.53
  5. Step 5: Solve for x
    x = 359,287,082.53/20,349.93
  6. Step 6: Final answer
    x = 17,655.45

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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.