Home / 21,000.52-31,500.78-14,406.72

Finding the Fourth Proportional to 21,000.52, 31,500.78 and 14,406.72

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Solution

The fourth proportional to 21,000.52, 31,500.78 and 14,406.72 is: 21,610.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.52 : 31,500.78 = 14,406.72 : x
  2. Step 2: Convert to fraction form
    21,000.52/31,500.78 = 14,406.72/x
  3. Step 3: Cross multiply
    21,000.52x = 31,500.78 × 14,406.72
  4. Step 4: Simplify right side
    21,000.52x = 453,822,917.24
  5. Step 5: Solve for x
    x = 453,822,917.24/21,000.52
  6. Step 6: Final answer
    x = 21,610.08

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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.