Home / 15,581.32-21,501.41-8,866.82

Finding the Fourth Proportional to 15,581.32, 21,501.41 and 8,866.82

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Solution

The fourth proportional to 15,581.32, 21,501.41 and 8,866.82 is: 12,235.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.32 : 21,501.41 = 8,866.82 : x
  2. Step 2: Convert to fraction form
    15,581.32/21,501.41 = 8,866.82/x
  3. Step 3: Cross multiply
    15,581.32x = 21,501.41 × 8,866.82
  4. Step 4: Simplify right side
    15,581.32x = 190,649,141.64
  5. Step 5: Solve for x
    x = 190,649,141.64/15,581.32
  6. Step 6: Final answer
    x = 12,235.75

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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.