Home / 10,915.40-16,373.10-10,769.60

Finding the Fourth Proportional to 10,915.40, 16,373.10 and 10,769.60

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Solution

The fourth proportional to 10,915.40, 16,373.10 and 10,769.60 is: 16,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.40 : 16,373.10 = 10,769.60 : x
  2. Step 2: Convert to fraction form
    10,915.40/16,373.10 = 10,769.60/x
  3. Step 3: Cross multiply
    10,915.40x = 16,373.10 × 10,769.60
  4. Step 4: Simplify right side
    10,915.40x = 176,331,737.76
  5. Step 5: Solve for x
    x = 176,331,737.76/10,915.40
  6. Step 6: Final answer
    x = 16,154.40

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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.