Home / 31,547.70-43,401.69-30,672.90

Finding the Fourth Proportional to 31,547.70, 43,401.69 and 30,672.90

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Solution

The fourth proportional to 31,547.70, 43,401.69 and 30,672.90 is: 42,198.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547.70 : 43,401.69 = 30,672.90 : x
  2. Step 2: Convert to fraction form
    31,547.70/43,401.69 = 30,672.90/x
  3. Step 3: Cross multiply
    31,547.70x = 43,401.69 × 30,672.90
  4. Step 4: Simplify right side
    31,547.70x = 1,331,255,697.20
  5. Step 5: Solve for x
    x = 1,331,255,697.20/31,547.70
  6. Step 6: Final answer
    x = 42,198.19

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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.