Home / 13,158.40-19,737.60-8,492.80

Finding the Fourth Proportional to 13,158.40, 19,737.60 and 8,492.80

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Solution

The fourth proportional to 13,158.40, 19,737.60 and 8,492.80 is: 12,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.40 : 19,737.60 = 8,492.80 : x
  2. Step 2: Convert to fraction form
    13,158.40/19,737.60 = 8,492.80/x
  3. Step 3: Cross multiply
    13,158.40x = 19,737.60 × 8,492.80
  4. Step 4: Simplify right side
    13,158.40x = 167,627,489.28
  5. Step 5: Solve for x
    x = 167,627,489.28/13,158.40
  6. Step 6: Final answer
    x = 12,739.20

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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.