Home / 15,281.58-21,086.76-8,566.80

Finding the Fourth Proportional to 15,281.58, 21,086.76 and 8,566.80

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Solution

The fourth proportional to 15,281.58, 21,086.76 and 8,566.80 is: 11,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.58 : 21,086.76 = 8,566.80 : x
  2. Step 2: Convert to fraction form
    15,281.58/21,086.76 = 8,566.80/x
  3. Step 3: Cross multiply
    15,281.58x = 21,086.76 × 8,566.80
  4. Step 4: Simplify right side
    15,281.58x = 180,646,055.57
  5. Step 5: Solve for x
    x = 180,646,055.57/15,281.58
  6. Step 6: Final answer
    x = 11,821.16

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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.