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Finding the Fourth Proportional to 10,532.88, 15,803.93 and 4,990.18

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Solution

The fourth proportional to 10,532.88, 15,803.93 and 4,990.18 is: 7,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,532.88 : 15,803.93 = 4,990.18 : x
  2. Step 2: Convert to fraction form
    10,532.88/15,803.93 = 4,990.18/x
  3. Step 3: Cross multiply
    10,532.88x = 15,803.93 × 4,990.18
  4. Step 4: Simplify right side
    10,532.88x = 78,864,455.41
  5. Step 5: Solve for x
    x = 78,864,455.41/10,532.88
  6. Step 6: Final answer
    x = 7,487.45

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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.