Home / 31,415.13-43,353.78-17,987.76

Finding the Fourth Proportional to 31,415.13, 43,353.78 and 17,987.76

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Solution

The fourth proportional to 31,415.13, 43,353.78 and 17,987.76 is: 24,823.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.13 : 43,353.78 = 17,987.76 : x
  2. Step 2: Convert to fraction form
    31,415.13/43,353.78 = 17,987.76/x
  3. Step 3: Cross multiply
    31,415.13x = 43,353.78 × 17,987.76
  4. Step 4: Simplify right side
    31,415.13x = 779,837,389.73
  5. Step 5: Solve for x
    x = 779,837,389.73/31,415.13
  6. Step 6: Final answer
    x = 24,823.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.