Home / 12,390.48-18,559.80-9,056.52

Finding the Fourth Proportional to 12,390.48, 18,559.80 and 9,056.52

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Solution

The fourth proportional to 12,390.48, 18,559.80 and 9,056.52 is: 13,565.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.48 : 18,559.80 = 9,056.52 : x
  2. Step 2: Convert to fraction form
    12,390.48/18,559.80 = 9,056.52/x
  3. Step 3: Cross multiply
    12,390.48x = 18,559.80 × 9,056.52
  4. Step 4: Simplify right side
    12,390.48x = 168,087,199.90
  5. Step 5: Solve for x
    x = 168,087,199.90/12,390.48
  6. Step 6: Final answer
    x = 13,565.83

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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.