Home / 20,712.40-31,068.60-14,923.60

Finding the Fourth Proportional to 20,712.40, 31,068.60 and 14,923.60

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Solution

The fourth proportional to 20,712.40, 31,068.60 and 14,923.60 is: 22,385.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.40 : 31,068.60 = 14,923.60 : x
  2. Step 2: Convert to fraction form
    20,712.40/31,068.60 = 14,923.60/x
  3. Step 3: Cross multiply
    20,712.40x = 31,068.60 × 14,923.60
  4. Step 4: Simplify right side
    20,712.40x = 463,655,358.96
  5. Step 5: Solve for x
    x = 463,655,358.96/20,712.40
  6. Step 6: Final answer
    x = 22,385.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.