Home / 31,345.39-47,013.76-11,621.22

Finding the Fourth Proportional to 31,345.39, 47,013.76 and 11,621.22

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Solution

The fourth proportional to 31,345.39, 47,013.76 and 11,621.22 is: 17,430.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,345.39 : 47,013.76 = 11,621.22 : x
  2. Step 2: Convert to fraction form
    31,345.39/47,013.76 = 11,621.22/x
  3. Step 3: Cross multiply
    31,345.39x = 47,013.76 × 11,621.22
  4. Step 4: Simplify right side
    31,345.39x = 546,357,247.99
  5. Step 5: Solve for x
    x = 546,357,247.99/31,345.39
  6. Step 6: Final answer
    x = 17,430.23

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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.