Home / 21,385.02-29,508.75-11,823.61

Finding the Fourth Proportional to 21,385.02, 29,508.75 and 11,823.61

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Solution

The fourth proportional to 21,385.02, 29,508.75 and 11,823.61 is: 16,315.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.02 : 29,508.75 = 11,823.61 : x
  2. Step 2: Convert to fraction form
    21,385.02/29,508.75 = 11,823.61/x
  3. Step 3: Cross multiply
    21,385.02x = 29,508.75 × 11,823.61
  4. Step 4: Simplify right side
    21,385.02x = 348,899,892.47
  5. Step 5: Solve for x
    x = 348,899,892.47/21,385.02
  6. Step 6: Final answer
    x = 16,315.16

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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.