Home / 15,547.61-21,456.28-8,834.37

Finding the Fourth Proportional to 15,547.61, 21,456.28 and 8,834.37

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Solution

The fourth proportional to 15,547.61, 21,456.28 and 8,834.37 is: 12,191.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.61 : 21,456.28 = 8,834.37 : x
  2. Step 2: Convert to fraction form
    15,547.61/21,456.28 = 8,834.37/x
  3. Step 3: Cross multiply
    15,547.61x = 21,456.28 × 8,834.37
  4. Step 4: Simplify right side
    15,547.61x = 189,552,716.34
  5. Step 5: Solve for x
    x = 189,552,716.34/15,547.61
  6. Step 6: Final answer
    x = 12,191.76

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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.