Home / 22,931.12-34,328.58-12,511.28

Finding the Fourth Proportional to 22,931.12, 34,328.58 and 12,511.28

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Solution

The fourth proportional to 22,931.12, 34,328.58 and 12,511.28 is: 18,729.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,931.12 : 34,328.58 = 12,511.28 : x
  2. Step 2: Convert to fraction form
    22,931.12/34,328.58 = 12,511.28/x
  3. Step 3: Cross multiply
    22,931.12x = 34,328.58 × 12,511.28
  4. Step 4: Simplify right side
    22,931.12x = 429,494,476.38
  5. Step 5: Solve for x
    x = 429,494,476.38/22,931.12
  6. Step 6: Final answer
    x = 18,729.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.