Home / 15,505.41-21,399.27-8,701.31

Finding the Fourth Proportional to 15,505.41, 21,399.27 and 8,701.31

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Solution

The fourth proportional to 15,505.41, 21,399.27 and 8,701.31 is: 12,008.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.41 : 21,399.27 = 8,701.31 : x
  2. Step 2: Convert to fraction form
    15,505.41/21,399.27 = 8,701.31/x
  3. Step 3: Cross multiply
    15,505.41x = 21,399.27 × 8,701.31
  4. Step 4: Simplify right side
    15,505.41x = 186,201,682.04
  5. Step 5: Solve for x
    x = 186,201,682.04/15,505.41
  6. Step 6: Final answer
    x = 12,008.82

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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.