Home / 20,590.61-28,400.02-13,038.17

Finding the Fourth Proportional to 20,590.61, 28,400.02 and 13,038.17

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Solution

The fourth proportional to 20,590.61, 28,400.02 and 13,038.17 is: 17,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.61 : 28,400.02 = 13,038.17 : x
  2. Step 2: Convert to fraction form
    20,590.61/28,400.02 = 13,038.17/x
  3. Step 3: Cross multiply
    20,590.61x = 28,400.02 × 13,038.17
  4. Step 4: Simplify right side
    20,590.61x = 370,284,114.17
  5. Step 5: Solve for x
    x = 370,284,114.17/20,590.61
  6. Step 6: Final answer
    x = 17,983.16

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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.