Home / 15,569.28-21,486.20-8,855.52

Finding the Fourth Proportional to 15,569.28, 21,486.20 and 8,855.52

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Solution

The fourth proportional to 15,569.28, 21,486.20 and 8,855.52 is: 12,220.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,569.28 : 21,486.20 = 8,855.52 : x
  2. Step 2: Convert to fraction form
    15,569.28/21,486.20 = 8,855.52/x
  3. Step 3: Cross multiply
    15,569.28x = 21,486.20 × 8,855.52
  4. Step 4: Simplify right side
    15,569.28x = 190,271,473.82
  5. Step 5: Solve for x
    x = 190,271,473.82/15,569.28
  6. Step 6: Final answer
    x = 12,220.96

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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.