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Finding the Fourth Proportional to 15,047.64, 20,775.89 and 9,391.01

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Solution

The fourth proportional to 15,047.64, 20,775.89 and 9,391.01 is: 12,965.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047.64 : 20,775.89 = 9,391.01 : x
  2. Step 2: Convert to fraction form
    15,047.64/20,775.89 = 9,391.01/x
  3. Step 3: Cross multiply
    15,047.64x = 20,775.89 × 9,391.01
  4. Step 4: Simplify right side
    15,047.64x = 195,106,510.35
  5. Step 5: Solve for x
    x = 195,106,510.35/15,047.64
  6. Step 6: Final answer
    x = 12,965.92

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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.