Home / 15,931.29-21,984.34-8,761.07

Finding the Fourth Proportional to 15,931.29, 21,984.34 and 8,761.07

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Solution

The fourth proportional to 15,931.29, 21,984.34 and 8,761.07 is: 12,089.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.29 : 21,984.34 = 8,761.07 : x
  2. Step 2: Convert to fraction form
    15,931.29/21,984.34 = 8,761.07/x
  3. Step 3: Cross multiply
    15,931.29x = 21,984.34 × 8,761.07
  4. Step 4: Simplify right side
    15,931.29x = 192,606,341.64
  5. Step 5: Solve for x
    x = 192,606,341.64/15,931.29
  6. Step 6: Final answer
    x = 12,089.81

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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.