Home / 12,328.40-18,492.60-10,377.20

Finding the Fourth Proportional to 12,328.40, 18,492.60 and 10,377.20

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Solution

The fourth proportional to 12,328.40, 18,492.60 and 10,377.20 is: 15,565.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,328.40 : 18,492.60 = 10,377.20 : x
  2. Step 2: Convert to fraction form
    12,328.40/18,492.60 = 10,377.20/x
  3. Step 3: Cross multiply
    12,328.40x = 18,492.60 × 10,377.20
  4. Step 4: Simplify right side
    12,328.40x = 191,901,408.72
  5. Step 5: Solve for x
    x = 191,901,408.72/12,328.40
  6. Step 6: Final answer
    x = 15,565.80

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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.