Home / 20,543.92-28,349.76-12,994.36

Finding the Fourth Proportional to 20,543.92, 28,349.76 and 12,994.36

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Solution

The fourth proportional to 20,543.92, 28,349.76 and 12,994.36 is: 17,931.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.92 : 28,349.76 = 12,994.36 : x
  2. Step 2: Convert to fraction form
    20,543.92/28,349.76 = 12,994.36/x
  3. Step 3: Cross multiply
    20,543.92x = 28,349.76 × 12,994.36
  4. Step 4: Simplify right side
    20,543.92x = 368,386,987.35
  5. Step 5: Solve for x
    x = 368,386,987.35/20,543.92
  6. Step 6: Final answer
    x = 17,931.68

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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.