Home / 21,187.46-29,242.95-12,236.42

Finding the Fourth Proportional to 21,187.46, 29,242.95 and 12,236.42

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Solution

The fourth proportional to 21,187.46, 29,242.95 and 12,236.42 is: 16,888.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.46 : 29,242.95 = 12,236.42 : x
  2. Step 2: Convert to fraction form
    21,187.46/29,242.95 = 12,236.42/x
  3. Step 3: Cross multiply
    21,187.46x = 29,242.95 × 12,236.42
  4. Step 4: Simplify right side
    21,187.46x = 357,829,018.24
  5. Step 5: Solve for x
    x = 357,829,018.24/21,187.46
  6. Step 6: Final answer
    x = 16,888.72

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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.