Home / 21,382.42-29,510.02-12,434.08

Finding the Fourth Proportional to 21,382.42, 29,510.02 and 12,434.08

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Solution

The fourth proportional to 21,382.42, 29,510.02 and 12,434.08 is: 17,160.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.42 : 29,510.02 = 12,434.08 : x
  2. Step 2: Convert to fraction form
    21,382.42/29,510.02 = 12,434.08/x
  3. Step 3: Cross multiply
    21,382.42x = 29,510.02 × 12,434.08
  4. Step 4: Simplify right side
    21,382.42x = 366,929,949.48
  5. Step 5: Solve for x
    x = 366,929,949.48/21,382.42
  6. Step 6: Final answer
    x = 17,160.36

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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.