Home / 12,862.81-19,294.20-8,448.35

Finding the Fourth Proportional to 12,862.81, 19,294.20 and 8,448.35

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Solution

The fourth proportional to 12,862.81, 19,294.20 and 8,448.35 is: 12,672.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.81 : 19,294.20 = 8,448.35 : x
  2. Step 2: Convert to fraction form
    12,862.81/19,294.20 = 8,448.35/x
  3. Step 3: Cross multiply
    12,862.81x = 19,294.20 × 8,448.35
  4. Step 4: Simplify right side
    12,862.81x = 163,004,058.10
  5. Step 5: Solve for x
    x = 163,004,058.10/12,862.81
  6. Step 6: Final answer
    x = 12,672.51

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Half scale
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Double scale
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Similar ratio
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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.