Home / 22,031.36-30,391.76-13,535.40

Finding the Fourth Proportional to 22,031.36, 30,391.76 and 13,535.40

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Solution

The fourth proportional to 22,031.36, 30,391.76 and 13,535.40 is: 18,671.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,031.36 : 30,391.76 = 13,535.40 : x
  2. Step 2: Convert to fraction form
    22,031.36/30,391.76 = 13,535.40/x
  3. Step 3: Cross multiply
    22,031.36x = 30,391.76 × 13,535.40
  4. Step 4: Simplify right side
    22,031.36x = 411,364,628.30
  5. Step 5: Solve for x
    x = 411,364,628.30/22,031.36
  6. Step 6: Final answer
    x = 18,671.78

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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.