Home / 31,437.92-43,393.53-18,700.07

Finding the Fourth Proportional to 31,437.92, 43,393.53 and 18,700.07

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Solution

The fourth proportional to 31,437.92, 43,393.53 and 18,700.07 is: 25,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,437.92 : 43,393.53 = 18,700.07 : x
  2. Step 2: Convert to fraction form
    31,437.92/43,393.53 = 18,700.07/x
  3. Step 3: Cross multiply
    31,437.92x = 43,393.53 × 18,700.07
  4. Step 4: Simplify right side
    31,437.92x = 811,462,048.55
  5. Step 5: Solve for x
    x = 811,462,048.55/31,437.92
  6. Step 6: Final answer
    x = 25,811.57

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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.