Home / 21,239.42-29,306.95-11,807.74

Finding the Fourth Proportional to 21,239.42, 29,306.95 and 11,807.74

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Solution

The fourth proportional to 21,239.42, 29,306.95 and 11,807.74 is: 16,292.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.42 : 29,306.95 = 11,807.74 : x
  2. Step 2: Convert to fraction form
    21,239.42/29,306.95 = 11,807.74/x
  3. Step 3: Cross multiply
    21,239.42x = 29,306.95 × 11,807.74
  4. Step 4: Simplify right side
    21,239.42x = 346,048,845.79
  5. Step 5: Solve for x
    x = 346,048,845.79/21,239.42
  6. Step 6: Final answer
    x = 16,292.76

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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.