Home / 31,388.32-47,085.56-10,319.81

Finding the Fourth Proportional to 31,388.32, 47,085.56 and 10,319.81

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Solution

The fourth proportional to 31,388.32, 47,085.56 and 10,319.81 is: 15,480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,388.32 : 47,085.56 = 10,319.81 : x
  2. Step 2: Convert to fraction form
    31,388.32/47,085.56 = 10,319.81/x
  3. Step 3: Cross multiply
    31,388.32x = 47,085.56 × 10,319.81
  4. Step 4: Simplify right side
    31,388.32x = 485,913,981.34
  5. Step 5: Solve for x
    x = 485,913,981.34/31,388.32
  6. Step 6: Final answer
    x = 15,480.73

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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.