Home / 21,315.04-29,417.02-11,755.88

Finding the Fourth Proportional to 21,315.04, 29,417.02 and 11,755.88

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Solution

The fourth proportional to 21,315.04, 29,417.02 and 11,755.88 is: 16,224.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.04 : 29,417.02 = 11,755.88 : x
  2. Step 2: Convert to fraction form
    21,315.04/29,417.02 = 11,755.88/x
  3. Step 3: Cross multiply
    21,315.04x = 29,417.02 × 11,755.88
  4. Step 4: Simplify right side
    21,315.04x = 345,822,957.08
  5. Step 5: Solve for x
    x = 345,822,957.08/21,315.04
  6. Step 6: Final answer
    x = 16,224.36

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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.