Home / 12,559.12-18,838.68-9,787.88

Finding the Fourth Proportional to 12,559.12, 18,838.68 and 9,787.88

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Solution

The fourth proportional to 12,559.12, 18,838.68 and 9,787.88 is: 14,681.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,559.12 : 18,838.68 = 9,787.88 : x
  2. Step 2: Convert to fraction form
    12,559.12/18,838.68 = 9,787.88/x
  3. Step 3: Cross multiply
    12,559.12x = 18,838.68 × 9,787.88
  4. Step 4: Simplify right side
    12,559.12x = 184,390,739.20
  5. Step 5: Solve for x
    x = 184,390,739.20/12,559.12
  6. Step 6: Final answer
    x = 14,681.82

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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.