Home / 31,547.40-43,521.18-18,115.32

Finding the Fourth Proportional to 31,547.40, 43,521.18 and 18,115.32

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Solution

The fourth proportional to 31,547.40, 43,521.18 and 18,115.32 is: 24,990.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547.40 : 43,521.18 = 18,115.32 : x
  2. Step 2: Convert to fraction form
    31,547.40/43,521.18 = 18,115.32/x
  3. Step 3: Cross multiply
    31,547.40x = 43,521.18 × 18,115.32
  4. Step 4: Simplify right side
    31,547.40x = 788,400,102.48
  5. Step 5: Solve for x
    x = 788,400,102.48/31,547.40
  6. Step 6: Final answer
    x = 24,990.97

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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.