Home / 31,210.56-43,071.40-18,642.56

Finding the Fourth Proportional to 31,210.56, 43,071.40 and 18,642.56

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Solution

The fourth proportional to 31,210.56, 43,071.40 and 18,642.56 is: 25,727.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,210.56 : 43,071.40 = 18,642.56 : x
  2. Step 2: Convert to fraction form
    31,210.56/43,071.40 = 18,642.56/x
  3. Step 3: Cross multiply
    31,210.56x = 43,071.40 × 18,642.56
  4. Step 4: Simplify right side
    31,210.56x = 802,961,158.78
  5. Step 5: Solve for x
    x = 802,961,158.78/31,210.56
  6. Step 6: Final answer
    x = 25,727.23

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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.