Home / 13,376.75-18,461.27-7,711.70

Finding the Fourth Proportional to 13,376.75, 18,461.27 and 7,711.70

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Solution

The fourth proportional to 13,376.75, 18,461.27 and 7,711.70 is: 10,642.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.75 : 18,461.27 = 7,711.70 : x
  2. Step 2: Convert to fraction form
    13,376.75/18,461.27 = 7,711.70/x
  3. Step 3: Cross multiply
    13,376.75x = 18,461.27 × 7,711.70
  4. Step 4: Simplify right side
    13,376.75x = 142,367,702.83
  5. Step 5: Solve for x
    x = 142,367,702.83/13,376.75
  6. Step 6: Final answer
    x = 10,642.93

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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.