Home / 21,278.52-29,366.02-12,326.16

Finding the Fourth Proportional to 21,278.52, 29,366.02 and 12,326.16

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Solution

The fourth proportional to 21,278.52, 29,366.02 and 12,326.16 is: 17,011.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.52 : 29,366.02 = 12,326.16 : x
  2. Step 2: Convert to fraction form
    21,278.52/29,366.02 = 12,326.16/x
  3. Step 3: Cross multiply
    21,278.52x = 29,366.02 × 12,326.16
  4. Step 4: Simplify right side
    21,278.52x = 361,970,261.08
  5. Step 5: Solve for x
    x = 361,970,261.08/21,278.52
  6. Step 6: Final answer
    x = 17,011.06

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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.