Home / 14,319.90-19,761.41-7,947.45

Finding the Fourth Proportional to 14,319.90, 19,761.41 and 7,947.45

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Solution

The fourth proportional to 14,319.90, 19,761.41 and 7,947.45 is: 10,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,319.90 : 19,761.41 = 7,947.45 : x
  2. Step 2: Convert to fraction form
    14,319.90/19,761.41 = 7,947.45/x
  3. Step 3: Cross multiply
    14,319.90x = 19,761.41 × 7,947.45
  4. Step 4: Simplify right side
    14,319.90x = 157,052,679.36
  5. Step 5: Solve for x
    x = 157,052,679.36/14,319.90
  6. Step 6: Final answer
    x = 10,967.45

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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.