Home / 21,291.68-29,376.01-12,337.45

Finding the Fourth Proportional to 21,291.68, 29,376.01 and 12,337.45

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Solution

The fourth proportional to 21,291.68, 29,376.01 and 12,337.45 is: 17,021.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.68 : 29,376.01 = 12,337.45 : x
  2. Step 2: Convert to fraction form
    21,291.68/29,376.01 = 12,337.45/x
  3. Step 3: Cross multiply
    21,291.68x = 29,376.01 × 12,337.45
  4. Step 4: Simplify right side
    21,291.68x = 362,425,225.83
  5. Step 5: Solve for x
    x = 362,425,225.83/21,291.68
  6. Step 6: Final answer
    x = 17,021.92

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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.