Home / 21,287.34-29,374.29-12,337.65

Finding the Fourth Proportional to 21,287.34, 29,374.29 and 12,337.65

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Solution

The fourth proportional to 21,287.34, 29,374.29 and 12,337.65 is: 17,024.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.34 : 29,374.29 = 12,337.65 : x
  2. Step 2: Convert to fraction form
    21,287.34/29,374.29 = 12,337.65/x
  3. Step 3: Cross multiply
    21,287.34x = 29,374.29 × 12,337.65
  4. Step 4: Simplify right side
    21,287.34x = 362,409,709.02
  5. Step 5: Solve for x
    x = 362,409,709.02/21,287.34
  6. Step 6: Final answer
    x = 17,024.66

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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.