Home / 40,288.88-60,431.50-13,995.68

Finding the Fourth Proportional to 40,288.88, 60,431.50 and 13,995.68

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Solution

The fourth proportional to 40,288.88, 60,431.50 and 13,995.68 is: 20,992.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,288.88 : 60,431.50 = 13,995.68 : x
  2. Step 2: Convert to fraction form
    40,288.88/60,431.50 = 13,995.68/x
  3. Step 3: Cross multiply
    40,288.88x = 60,431.50 × 13,995.68
  4. Step 4: Simplify right side
    40,288.88x = 845,779,935.92
  5. Step 5: Solve for x
    x = 845,779,935.92/40,288.88
  6. Step 6: Final answer
    x = 20,992.89

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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.