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Finding the Fourth Proportional to 15,193.65, 20,961.65 and 9,528.63

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Solution

The fourth proportional to 15,193.65, 20,961.65 and 9,528.63 is: 13,146.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,193.65 : 20,961.65 = 9,528.63 : x
  2. Step 2: Convert to fraction form
    15,193.65/20,961.65 = 9,528.63/x
  3. Step 3: Cross multiply
    15,193.65x = 20,961.65 × 9,528.63
  4. Step 4: Simplify right side
    15,193.65x = 199,735,807.04
  5. Step 5: Solve for x
    x = 199,735,807.04/15,193.65
  6. Step 6: Final answer
    x = 13,146.01

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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.