Home / 15,871.80-21,903.26-8,798.32

Finding the Fourth Proportional to 15,871.80, 21,903.26 and 8,798.32

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Solution

The fourth proportional to 15,871.80, 21,903.26 and 8,798.32 is: 12,141.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,871.80 : 21,903.26 = 8,798.32 : x
  2. Step 2: Convert to fraction form
    15,871.80/21,903.26 = 8,798.32/x
  3. Step 3: Cross multiply
    15,871.80x = 21,903.26 × 8,798.32
  4. Step 4: Simplify right side
    15,871.80x = 192,711,890.52
  5. Step 5: Solve for x
    x = 192,711,890.52/15,871.80
  6. Step 6: Final answer
    x = 12,141.78

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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.