Home / 13,255.32-19,889.78-7,331.10

Finding the Fourth Proportional to 13,255.32, 19,889.78 and 7,331.10

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Solution

The fourth proportional to 13,255.32, 19,889.78 and 7,331.10 is: 11,000.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.32 : 19,889.78 = 7,331.10 : x
  2. Step 2: Convert to fraction form
    13,255.32/19,889.78 = 7,331.10/x
  3. Step 3: Cross multiply
    13,255.32x = 19,889.78 × 7,331.10
  4. Step 4: Simplify right side
    13,255.32x = 145,813,966.16
  5. Step 5: Solve for x
    x = 145,813,966.16/13,255.32
  6. Step 6: Final answer
    x = 11,000.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.