Home / 15,867.56-21,899.40-9,153.56

Finding the Fourth Proportional to 15,867.56, 21,899.40 and 9,153.56

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Solution

The fourth proportional to 15,867.56, 21,899.40 and 9,153.56 is: 12,633.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,867.56 : 21,899.40 = 9,153.56 : x
  2. Step 2: Convert to fraction form
    15,867.56/21,899.40 = 9,153.56/x
  3. Step 3: Cross multiply
    15,867.56x = 21,899.40 × 9,153.56
  4. Step 4: Simplify right side
    15,867.56x = 200,457,471.86
  5. Step 5: Solve for x
    x = 200,457,471.86/15,867.56
  6. Step 6: Final answer
    x = 12,633.16

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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.