Home / 21,406.97-29,547.54-12,456.20

Finding the Fourth Proportional to 21,406.97, 29,547.54 and 12,456.20

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Solution

The fourth proportional to 21,406.97, 29,547.54 and 12,456.20 is: 17,193.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.97 : 29,547.54 = 12,456.20 : x
  2. Step 2: Convert to fraction form
    21,406.97/29,547.54 = 12,456.20/x
  3. Step 3: Cross multiply
    21,406.97x = 29,547.54 × 12,456.20
  4. Step 4: Simplify right side
    21,406.97x = 368,049,920.01
  5. Step 5: Solve for x
    x = 368,049,920.01/21,406.97
  6. Step 6: Final answer
    x = 17,193.00

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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.