Home / 15,569.42-21,490.38-8,858.80

Finding the Fourth Proportional to 15,569.42, 21,490.38 and 8,858.80

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Solution

The fourth proportional to 15,569.42, 21,490.38 and 8,858.80 is: 12,227.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,569.42 : 21,490.38 = 8,858.80 : x
  2. Step 2: Convert to fraction form
    15,569.42/21,490.38 = 8,858.80/x
  3. Step 3: Cross multiply
    15,569.42x = 21,490.38 × 8,858.80
  4. Step 4: Simplify right side
    15,569.42x = 190,378,978.34
  5. Step 5: Solve for x
    x = 190,378,978.34/15,569.42
  6. Step 6: Final answer
    x = 12,227.75

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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.