Home / 31,547.40-43,535.32-18,119.52

Finding the Fourth Proportional to 31,547.40, 43,535.32 and 18,119.52

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Solution

The fourth proportional to 31,547.40, 43,535.32 and 18,119.52 is: 25,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547.40 : 43,535.32 = 18,119.52 : x
  2. Step 2: Convert to fraction form
    31,547.40/43,535.32 = 18,119.52/x
  3. Step 3: Cross multiply
    31,547.40x = 43,535.32 × 18,119.52
  4. Step 4: Simplify right side
    31,547.40x = 788,839,101.45
  5. Step 5: Solve for x
    x = 788,839,101.45/31,547.40
  6. Step 6: Final answer
    x = 25,004.88

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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.