Home / 21,035.18-31,488.36-13,624.90

Finding the Fourth Proportional to 21,035.18, 31,488.36 and 13,624.90

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Solution

The fourth proportional to 21,035.18, 31,488.36 and 13,624.90 is: 20,395.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.18 : 31,488.36 = 13,624.90 : x
  2. Step 2: Convert to fraction form
    21,035.18/31,488.36 = 13,624.90/x
  3. Step 3: Cross multiply
    21,035.18x = 31,488.36 × 13,624.90
  4. Step 4: Simplify right side
    21,035.18x = 429,025,756.16
  5. Step 5: Solve for x
    x = 429,025,756.16/21,035.18
  6. Step 6: Final answer
    x = 20,395.63

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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.