Home / 21,564.50-29,756.70-12,002.85

Finding the Fourth Proportional to 21,564.50, 29,756.70 and 12,002.85

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Solution

The fourth proportional to 21,564.50, 29,756.70 and 12,002.85 is: 16,562.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,564.50 : 29,756.70 = 12,002.85 : x
  2. Step 2: Convert to fraction form
    21,564.50/29,756.70 = 12,002.85/x
  3. Step 3: Cross multiply
    21,564.50x = 29,756.70 × 12,002.85
  4. Step 4: Simplify right side
    21,564.50x = 357,165,206.60
  5. Step 5: Solve for x
    x = 357,165,206.60/21,564.50
  6. Step 6: Final answer
    x = 16,562.65

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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.