Home / 15,559.21-21,471.56-8,485.66

Finding the Fourth Proportional to 15,559.21, 21,471.56 and 8,485.66

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Solution

The fourth proportional to 15,559.21, 21,471.56 and 8,485.66 is: 11,710.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,559.21 : 21,471.56 = 8,485.66 : x
  2. Step 2: Convert to fraction form
    15,559.21/21,471.56 = 8,485.66/x
  3. Step 3: Cross multiply
    15,559.21x = 21,471.56 × 8,485.66
  4. Step 4: Simplify right side
    15,559.21x = 182,200,250.47
  5. Step 5: Solve for x
    x = 182,200,250.47/15,559.21
  6. Step 6: Final answer
    x = 11,710.13

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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.