Home / 19,959.90-29,939.85-12,572.70

Finding the Fourth Proportional to 19,959.90, 29,939.85 and 12,572.70

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Solution

The fourth proportional to 19,959.90, 29,939.85 and 12,572.70 is: 18,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.90 : 29,939.85 = 12,572.70 : x
  2. Step 2: Convert to fraction form
    19,959.90/29,939.85 = 12,572.70/x
  3. Step 3: Cross multiply
    19,959.90x = 29,939.85 × 12,572.70
  4. Step 4: Simplify right side
    19,959.90x = 376,424,752.10
  5. Step 5: Solve for x
    x = 376,424,752.10/19,959.90
  6. Step 6: Final answer
    x = 18,859.05

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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.