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Finding the Fourth Proportional to 10,888.74, 15,031.05 and 7,356.73

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Solution

The fourth proportional to 10,888.74, 15,031.05 and 7,356.73 is: 10,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,888.74 : 15,031.05 = 7,356.73 : x
  2. Step 2: Convert to fraction form
    10,888.74/15,031.05 = 7,356.73/x
  3. Step 3: Cross multiply
    10,888.74x = 15,031.05 × 7,356.73
  4. Step 4: Simplify right side
    10,888.74x = 110,579,422.84
  5. Step 5: Solve for x
    x = 110,579,422.84/10,888.74
  6. Step 6: Final answer
    x = 10,155.40

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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.