Home / 21,023.28-31,530.60-9,925.20

Finding the Fourth Proportional to 21,023.28, 31,530.60 and 9,925.20

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Solution

The fourth proportional to 21,023.28, 31,530.60 and 9,925.20 is: 14,885.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.28 : 31,530.60 = 9,925.20 : x
  2. Step 2: Convert to fraction form
    21,023.28/31,530.60 = 9,925.20/x
  3. Step 3: Cross multiply
    21,023.28x = 31,530.60 × 9,925.20
  4. Step 4: Simplify right side
    21,023.28x = 312,947,511.12
  5. Step 5: Solve for x
    x = 312,947,511.12/21,023.28
  6. Step 6: Final answer
    x = 14,885.76

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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.