Home / 31,561.68-47,345.04-18,415.40

Finding the Fourth Proportional to 31,561.68, 47,345.04 and 18,415.40

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Solution

The fourth proportional to 31,561.68, 47,345.04 and 18,415.40 is: 27,624.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,561.68 : 47,345.04 = 18,415.40 : x
  2. Step 2: Convert to fraction form
    31,561.68/47,345.04 = 18,415.40/x
  3. Step 3: Cross multiply
    31,561.68x = 47,345.04 × 18,415.40
  4. Step 4: Simplify right side
    31,561.68x = 871,877,849.62
  5. Step 5: Solve for x
    x = 871,877,849.62/31,561.68
  6. Step 6: Final answer
    x = 27,624.57

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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.