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Finding the Fourth Proportional to 15,030, 20,737.88 and 8,738.80

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Solution

The fourth proportional to 15,030, 20,737.88 and 8,738.80 is: 12,057.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030 : 20,737.88 = 8,738.80 : x
  2. Step 2: Convert to fraction form
    15,030/20,737.88 = 8,738.80/x
  3. Step 3: Cross multiply
    15,030x = 20,737.88 × 8,738.80
  4. Step 4: Simplify right side
    15,030x = 181,224,185.74
  5. Step 5: Solve for x
    x = 181,224,185.74/15,030
  6. Step 6: Final answer
    x = 12,057.50

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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.