Home / 31,437.76-43,378.32-18,695.20

Finding the Fourth Proportional to 31,437.76, 43,378.32 and 18,695.20

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Solution

The fourth proportional to 31,437.76, 43,378.32 and 18,695.20 is: 25,795.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,437.76 : 43,378.32 = 18,695.20 : x
  2. Step 2: Convert to fraction form
    31,437.76/43,378.32 = 18,695.20/x
  3. Step 3: Cross multiply
    31,437.76x = 43,378.32 × 18,695.20
  4. Step 4: Simplify right side
    31,437.76x = 810,966,368.06
  5. Step 5: Solve for x
    x = 810,966,368.06/31,437.76
  6. Step 6: Final answer
    x = 25,795.93

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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.