Home / 21,040.65-29,023.85-13,484.30

Finding the Fourth Proportional to 21,040.65, 29,023.85 and 13,484.30

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Solution

The fourth proportional to 21,040.65, 29,023.85 and 13,484.30 is: 18,600.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.65 : 29,023.85 = 13,484.30 : x
  2. Step 2: Convert to fraction form
    21,040.65/29,023.85 = 13,484.30/x
  3. Step 3: Cross multiply
    21,040.65x = 29,023.85 × 13,484.30
  4. Step 4: Simplify right side
    21,040.65x = 391,366,189.15
  5. Step 5: Solve for x
    x = 391,366,189.15/21,040.65
  6. Step 6: Final answer
    x = 18,600.48

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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.