Home / 21,152.64-29,182.92-12,655.01

Finding the Fourth Proportional to 21,152.64, 29,182.92 and 12,655.01

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Solution

The fourth proportional to 21,152.64, 29,182.92 and 12,655.01 is: 17,459.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.64 : 29,182.92 = 12,655.01 : x
  2. Step 2: Convert to fraction form
    21,152.64/29,182.92 = 12,655.01/x
  3. Step 3: Cross multiply
    21,152.64x = 29,182.92 × 12,655.01
  4. Step 4: Simplify right side
    21,152.64x = 369,309,951.06
  5. Step 5: Solve for x
    x = 369,309,951.06/21,152.64
  6. Step 6: Final answer
    x = 17,459.28

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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.