Home / 10,803.28-14,915.40-8,818.55

Finding the Fourth Proportional to 10,803.28, 14,915.40 and 8,818.55

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Solution

The fourth proportional to 10,803.28, 14,915.40 and 8,818.55 is: 12,175.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,803.28 : 14,915.40 = 8,818.55 : x
  2. Step 2: Convert to fraction form
    10,803.28/14,915.40 = 8,818.55/x
  3. Step 3: Cross multiply
    10,803.28x = 14,915.40 × 8,818.55
  4. Step 4: Simplify right side
    10,803.28x = 131,532,200.67
  5. Step 5: Solve for x
    x = 131,532,200.67/10,803.28
  6. Step 6: Final answer
    x = 12,175.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.