Home / 15,883.96-21,920.52-8,810.36

Finding the Fourth Proportional to 15,883.96, 21,920.52 and 8,810.36

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Solution

The fourth proportional to 15,883.96, 21,920.52 and 8,810.36 is: 12,158.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,883.96 : 21,920.52 = 8,810.36 : x
  2. Step 2: Convert to fraction form
    15,883.96/21,920.52 = 8,810.36/x
  3. Step 3: Cross multiply
    15,883.96x = 21,920.52 × 8,810.36
  4. Step 4: Simplify right side
    15,883.96x = 193,127,672.59
  5. Step 5: Solve for x
    x = 193,127,672.59/15,883.96
  6. Step 6: Final answer
    x = 12,158.66

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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.