Home / 21,180.30-29,142.99-17,389.50

Finding the Fourth Proportional to 21,180.30, 29,142.99 and 17,389.50

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Solution

The fourth proportional to 21,180.30, 29,142.99 and 17,389.50 is: 23,927.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.30 : 29,142.99 = 17,389.50 : x
  2. Step 2: Convert to fraction form
    21,180.30/29,142.99 = 17,389.50/x
  3. Step 3: Cross multiply
    21,180.30x = 29,142.99 × 17,389.50
  4. Step 4: Simplify right side
    21,180.30x = 506,782,024.61
  5. Step 5: Solve for x
    x = 506,782,024.61/21,180.30
  6. Step 6: Final answer
    x = 23,927.05

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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.