Home / 15,547.31-21,455.29-8,473.75

Finding the Fourth Proportional to 15,547.31, 21,455.29 and 8,473.75

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Solution

The fourth proportional to 15,547.31, 21,455.29 and 8,473.75 is: 11,693.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.31 : 21,455.29 = 8,473.75 : x
  2. Step 2: Convert to fraction form
    15,547.31/21,455.29 = 8,473.75/x
  3. Step 3: Cross multiply
    15,547.31x = 21,455.29 × 8,473.75
  4. Step 4: Simplify right side
    15,547.31x = 181,806,801.05
  5. Step 5: Solve for x
    x = 181,806,801.05/15,547.31
  6. Step 6: Final answer
    x = 11,693.78

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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.