Home / 21,864.96-30,176.64-12,437.76

Finding the Fourth Proportional to 21,864.96, 30,176.64 and 12,437.76

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Solution

The fourth proportional to 21,864.96, 30,176.64 and 12,437.76 is: 17,165.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.96 : 30,176.64 = 12,437.76 : x
  2. Step 2: Convert to fraction form
    21,864.96/30,176.64 = 12,437.76/x
  3. Step 3: Cross multiply
    21,864.96x = 30,176.64 × 12,437.76
  4. Step 4: Simplify right side
    21,864.96x = 375,329,805.93
  5. Step 5: Solve for x
    x = 375,329,805.93/21,864.96
  6. Step 6: Final answer
    x = 17,165.81

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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.