Home / 15,581.23-21,502.89-8,867.81

Finding the Fourth Proportional to 15,581.23, 21,502.89 and 8,867.81

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Solution

The fourth proportional to 15,581.23, 21,502.89 and 8,867.81 is: 12,238.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.23 : 21,502.89 = 8,867.81 : x
  2. Step 2: Convert to fraction form
    15,581.23/21,502.89 = 8,867.81/x
  3. Step 3: Cross multiply
    15,581.23x = 21,502.89 × 8,867.81
  4. Step 4: Simplify right side
    15,581.23x = 190,683,542.97
  5. Step 5: Solve for x
    x = 190,683,542.97/15,581.23
  6. Step 6: Final answer
    x = 12,238.03

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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.