Home / 22,703.35-31,330.13-13,143.64

Finding the Fourth Proportional to 22,703.35, 31,330.13 and 13,143.64

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Solution

The fourth proportional to 22,703.35, 31,330.13 and 13,143.64 is: 18,137.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,703.35 : 31,330.13 = 13,143.64 : x
  2. Step 2: Convert to fraction form
    22,703.35/31,330.13 = 13,143.64/x
  3. Step 3: Cross multiply
    22,703.35x = 31,330.13 × 13,143.64
  4. Step 4: Simplify right side
    22,703.35x = 411,791,838.69
  5. Step 5: Solve for x
    x = 411,791,838.69/22,703.35
  6. Step 6: Final answer
    x = 18,137.94

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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.