Home / 21,254.62-31,887.06-10,158.16

Finding the Fourth Proportional to 21,254.62, 31,887.06 and 10,158.16

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Solution

The fourth proportional to 21,254.62, 31,887.06 and 10,158.16 is: 15,239.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.62 : 31,887.06 = 10,158.16 : x
  2. Step 2: Convert to fraction form
    21,254.62/31,887.06 = 10,158.16/x
  3. Step 3: Cross multiply
    21,254.62x = 31,887.06 × 10,158.16
  4. Step 4: Simplify right side
    21,254.62x = 323,913,857.41
  5. Step 5: Solve for x
    x = 323,913,857.41/21,254.62
  6. Step 6: Final answer
    x = 15,239.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.