Home / 20,299.47-28,000.94-12,347.16

Finding the Fourth Proportional to 20,299.47, 28,000.94 and 12,347.16

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Solution

The fourth proportional to 20,299.47, 28,000.94 and 12,347.16 is: 17,031.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.47 : 28,000.94 = 12,347.16 : x
  2. Step 2: Convert to fraction form
    20,299.47/28,000.94 = 12,347.16/x
  3. Step 3: Cross multiply
    20,299.47x = 28,000.94 × 12,347.16
  4. Step 4: Simplify right side
    20,299.47x = 345,732,024.59
  5. Step 5: Solve for x
    x = 345,732,024.59/20,299.47
  6. Step 6: Final answer
    x = 17,031.58

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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.