Home / 21,334.06-29,437.65-12,379.72

Finding the Fourth Proportional to 21,334.06, 29,437.65 and 12,379.72

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Solution

The fourth proportional to 21,334.06, 29,437.65 and 12,379.72 is: 17,082.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.06 : 29,437.65 = 12,379.72 : x
  2. Step 2: Convert to fraction form
    21,334.06/29,437.65 = 12,379.72/x
  3. Step 3: Cross multiply
    21,334.06x = 29,437.65 × 12,379.72
  4. Step 4: Simplify right side
    21,334.06x = 364,429,864.46
  5. Step 5: Solve for x
    x = 364,429,864.46/21,334.06
  6. Step 6: Final answer
    x = 17,082.07

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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.