Home / 42,228.65-63,339.33-12,653.12

Finding the Fourth Proportional to 42,228.65, 63,339.33 and 12,653.12

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Solution

The fourth proportional to 42,228.65, 63,339.33 and 12,653.12 is: 18,978.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,228.65 : 63,339.33 = 12,653.12 : x
  2. Step 2: Convert to fraction form
    42,228.65/63,339.33 = 12,653.12/x
  3. Step 3: Cross multiply
    42,228.65x = 63,339.33 × 12,653.12
  4. Step 4: Simplify right side
    42,228.65x = 801,440,143.21
  5. Step 5: Solve for x
    x = 801,440,143.21/42,228.65
  6. Step 6: Final answer
    x = 18,978.59

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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.