Home / 13,557.16-18,702.66-7,964.20

Finding the Fourth Proportional to 13,557.16, 18,702.66 and 7,964.20

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Solution

The fourth proportional to 13,557.16, 18,702.66 and 7,964.20 is: 10,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.16 : 18,702.66 = 7,964.20 : x
  2. Step 2: Convert to fraction form
    13,557.16/18,702.66 = 7,964.20/x
  3. Step 3: Cross multiply
    13,557.16x = 18,702.66 × 7,964.20
  4. Step 4: Simplify right side
    13,557.16x = 148,951,724.77
  5. Step 5: Solve for x
    x = 148,951,724.77/13,557.16
  6. Step 6: Final answer
    x = 10,986.94

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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.