Home / 13,247.31-19,866.57-5,347.78

Finding the Fourth Proportional to 13,247.31, 19,866.57 and 5,347.78

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Solution

The fourth proportional to 13,247.31, 19,866.57 and 5,347.78 is: 8,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.31 : 19,866.57 = 5,347.78 : x
  2. Step 2: Convert to fraction form
    13,247.31/19,866.57 = 5,347.78/x
  3. Step 3: Cross multiply
    13,247.31x = 19,866.57 × 5,347.78
  4. Step 4: Simplify right side
    13,247.31x = 106,242,045.71
  5. Step 5: Solve for x
    x = 106,242,045.71/13,247.31
  6. Step 6: Final answer
    x = 8,019.90

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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.