Home / 12,862.20-19,322.10-12,337.40

Finding the Fourth Proportional to 12,862.20, 19,322.10 and 12,337.40

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Solution

The fourth proportional to 12,862.20, 19,322.10 and 12,337.40 is: 18,533.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.20 : 19,322.10 = 12,337.40 : x
  2. Step 2: Convert to fraction form
    12,862.20/19,322.10 = 12,337.40/x
  3. Step 3: Cross multiply
    12,862.20x = 19,322.10 × 12,337.40
  4. Step 4: Simplify right side
    12,862.20x = 238,384,476.54
  5. Step 5: Solve for x
    x = 238,384,476.54/12,862.20
  6. Step 6: Final answer
    x = 18,533.72

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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.