Home / 31,681.55-43,730.28-18,261.78

Finding the Fourth Proportional to 31,681.55, 43,730.28 and 18,261.78

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Solution

The fourth proportional to 31,681.55, 43,730.28 and 18,261.78 is: 25,206.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,681.55 : 43,730.28 = 18,261.78 : x
  2. Step 2: Convert to fraction form
    31,681.55/43,730.28 = 18,261.78/x
  3. Step 3: Cross multiply
    31,681.55x = 43,730.28 × 18,261.78
  4. Step 4: Simplify right side
    31,681.55x = 798,592,588.71
  5. Step 5: Solve for x
    x = 798,592,588.71/31,681.55
  6. Step 6: Final answer
    x = 25,206.86

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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.