Home / 12,565.80-18,848.70-4,774.20

Finding the Fourth Proportional to 12,565.80, 18,848.70 and 4,774.20

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Solution

The fourth proportional to 12,565.80, 18,848.70 and 4,774.20 is: 7,161.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,565.80 : 18,848.70 = 4,774.20 : x
  2. Step 2: Convert to fraction form
    12,565.80/18,848.70 = 4,774.20/x
  3. Step 3: Cross multiply
    12,565.80x = 18,848.70 × 4,774.20
  4. Step 4: Simplify right side
    12,565.80x = 89,987,463.54
  5. Step 5: Solve for x
    x = 89,987,463.54/12,565.80
  6. Step 6: Final answer
    x = 7,161.30

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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.