Home / 12,823.28-19,220.55-8,389.47

Finding the Fourth Proportional to 12,823.28, 19,220.55 and 8,389.47

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Solution

The fourth proportional to 12,823.28, 19,220.55 and 8,389.47 is: 12,574.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,823.28 : 19,220.55 = 8,389.47 : x
  2. Step 2: Convert to fraction form
    12,823.28/19,220.55 = 8,389.47/x
  3. Step 3: Cross multiply
    12,823.28x = 19,220.55 × 8,389.47
  4. Step 4: Simplify right side
    12,823.28x = 161,250,227.61
  5. Step 5: Solve for x
    x = 161,250,227.61/12,823.28
  6. Step 6: Final answer
    x = 12,574.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.