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Finding the Fourth Proportional to 15,246.76, 21,040.40 and 8,532.40

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Solution

The fourth proportional to 15,246.76, 21,040.40 and 8,532.40 is: 11,774.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,246.76 : 21,040.40 = 8,532.40 : x
  2. Step 2: Convert to fraction form
    15,246.76/21,040.40 = 8,532.40/x
  3. Step 3: Cross multiply
    15,246.76x = 21,040.40 × 8,532.40
  4. Step 4: Simplify right side
    15,246.76x = 179,525,108.96
  5. Step 5: Solve for x
    x = 179,525,108.96/15,246.76
  6. Step 6: Final answer
    x = 11,774.64

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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.