Home / 31,095.16-42,909.24-18,347.68

Finding the Fourth Proportional to 31,095.16, 42,909.24 and 18,347.68

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Solution

The fourth proportional to 31,095.16, 42,909.24 and 18,347.68 is: 25,318.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,095.16 : 42,909.24 = 18,347.68 : x
  2. Step 2: Convert to fraction form
    31,095.16/42,909.24 = 18,347.68/x
  3. Step 3: Cross multiply
    31,095.16x = 42,909.24 × 18,347.68
  4. Step 4: Simplify right side
    31,095.16x = 787,285,004.56
  5. Step 5: Solve for x
    x = 787,285,004.56/31,095.16
  6. Step 6: Final answer
    x = 25,318.57

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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.