Home / 42,947.24-64,423.74-11,779.88

Finding the Fourth Proportional to 42,947.24, 64,423.74 and 11,779.88

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Solution

The fourth proportional to 42,947.24, 64,423.74 and 11,779.88 is: 17,670.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,947.24 : 64,423.74 = 11,779.88 : x
  2. Step 2: Convert to fraction form
    42,947.24/64,423.74 = 11,779.88/x
  3. Step 3: Cross multiply
    42,947.24x = 64,423.74 × 11,779.88
  4. Step 4: Simplify right side
    42,947.24x = 758,903,926.35
  5. Step 5: Solve for x
    x = 758,903,926.35/42,947.24
  6. Step 6: Final answer
    x = 17,670.61

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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.