Home / 31,407.81-43,346.46-18,661.10

Finding the Fourth Proportional to 31,407.81, 43,346.46 and 18,661.10

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Solution

The fourth proportional to 31,407.81, 43,346.46 and 18,661.10 is: 25,754.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,407.81 : 43,346.46 = 18,661.10 : x
  2. Step 2: Convert to fraction form
    31,407.81/43,346.46 = 18,661.10/x
  3. Step 3: Cross multiply
    31,407.81x = 43,346.46 × 18,661.10
  4. Step 4: Simplify right side
    31,407.81x = 808,892,407.97
  5. Step 5: Solve for x
    x = 808,892,407.97/31,407.81
  6. Step 6: Final answer
    x = 25,754.50

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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.