Home / 9,415.71-14,121.63-8,947.35

Finding the Fourth Proportional to 9,415.71, 14,121.63 and 8,947.35

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Solution

The fourth proportional to 9,415.71, 14,121.63 and 8,947.35 is: 13,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.71 : 14,121.63 = 8,947.35 : x
  2. Step 2: Convert to fraction form
    9,415.71/14,121.63 = 8,947.35/x
  3. Step 3: Cross multiply
    9,415.71x = 14,121.63 × 8,947.35
  4. Step 4: Simplify right side
    9,415.71x = 126,351,166.18
  5. Step 5: Solve for x
    x = 126,351,166.18/9,415.71
  6. Step 6: Final answer
    x = 13,419.19

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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.