Home / 21,188.29-29,242.41-12,235.75

Finding the Fourth Proportional to 21,188.29, 29,242.41 and 12,235.75

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Solution

The fourth proportional to 21,188.29, 29,242.41 and 12,235.75 is: 16,886.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.29 : 29,242.41 = 12,235.75 : x
  2. Step 2: Convert to fraction form
    21,188.29/29,242.41 = 12,235.75/x
  3. Step 3: Cross multiply
    21,188.29x = 29,242.41 × 12,235.75
  4. Step 4: Simplify right side
    21,188.29x = 357,802,818.16
  5. Step 5: Solve for x
    x = 357,802,818.16/21,188.29
  6. Step 6: Final answer
    x = 16,886.82

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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.