Home / 31,290.03-43,173.45-18,547.20

Finding the Fourth Proportional to 31,290.03, 43,173.45 and 18,547.20

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Solution

The fourth proportional to 31,290.03, 43,173.45 and 18,547.20 is: 25,591.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.03 : 43,173.45 = 18,547.20 : x
  2. Step 2: Convert to fraction form
    31,290.03/43,173.45 = 18,547.20/x
  3. Step 3: Cross multiply
    31,290.03x = 43,173.45 × 18,547.20
  4. Step 4: Simplify right side
    31,290.03x = 800,746,611.84
  5. Step 5: Solve for x
    x = 800,746,611.84/31,290.03
  6. Step 6: Final answer
    x = 25,591.11

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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.