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Finding the Fourth Proportional to 10,867.74, 15,004.95 and 7,335.90

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Solution

The fourth proportional to 10,867.74, 15,004.95 and 7,335.90 is: 10,128.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,867.74 : 15,004.95 = 7,335.90 : x
  2. Step 2: Convert to fraction form
    10,867.74/15,004.95 = 7,335.90/x
  3. Step 3: Cross multiply
    10,867.74x = 15,004.95 × 7,335.90
  4. Step 4: Simplify right side
    10,867.74x = 110,074,812.71
  5. Step 5: Solve for x
    x = 110,074,812.71/10,867.74
  6. Step 6: Final answer
    x = 10,128.58

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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.