Home / 15,220.74-21,006.15-8,849.28

Finding the Fourth Proportional to 15,220.74, 21,006.15 and 8,849.28

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Solution

The fourth proportional to 15,220.74, 21,006.15 and 8,849.28 is: 12,212.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.74 : 21,006.15 = 8,849.28 : x
  2. Step 2: Convert to fraction form
    15,220.74/21,006.15 = 8,849.28/x
  3. Step 3: Cross multiply
    15,220.74x = 21,006.15 × 8,849.28
  4. Step 4: Simplify right side
    15,220.74x = 185,889,303.07
  5. Step 5: Solve for x
    x = 185,889,303.07/15,220.74
  6. Step 6: Final answer
    x = 12,212.90

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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.