Home / 21,392.79-29,523.63-12,319.73

Finding the Fourth Proportional to 21,392.79, 29,523.63 and 12,319.73

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Solution

The fourth proportional to 21,392.79, 29,523.63 and 12,319.73 is: 17,002.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.79 : 29,523.63 = 12,319.73 : x
  2. Step 2: Convert to fraction form
    21,392.79/29,523.63 = 12,319.73/x
  3. Step 3: Cross multiply
    21,392.79x = 29,523.63 × 12,319.73
  4. Step 4: Simplify right side
    21,392.79x = 363,723,002.60
  5. Step 5: Solve for x
    x = 363,723,002.60/21,392.79
  6. Step 6: Final answer
    x = 17,002.13

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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.