Home / 15,547.29-21,447.18-9,872.33

Finding the Fourth Proportional to 15,547.29, 21,447.18 and 9,872.33

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Solution

The fourth proportional to 15,547.29, 21,447.18 and 9,872.33 is: 13,618.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.29 : 21,447.18 = 9,872.33 : x
  2. Step 2: Convert to fraction form
    15,547.29/21,447.18 = 9,872.33/x
  3. Step 3: Cross multiply
    15,547.29x = 21,447.18 × 9,872.33
  4. Step 4: Simplify right side
    15,547.29x = 211,733,651.93
  5. Step 5: Solve for x
    x = 211,733,651.93/15,547.29
  6. Step 6: Final answer
    x = 13,618.68

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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.