Home / 22,511.51-31,065.76-12,440.65

Finding the Fourth Proportional to 22,511.51, 31,065.76 and 12,440.65

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Solution

The fourth proportional to 22,511.51, 31,065.76 and 12,440.65 is: 17,168.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,511.51 : 31,065.76 = 12,440.65 : x
  2. Step 2: Convert to fraction form
    22,511.51/31,065.76 = 12,440.65/x
  3. Step 3: Cross multiply
    22,511.51x = 31,065.76 × 12,440.65
  4. Step 4: Simplify right side
    22,511.51x = 386,478,247.14
  5. Step 5: Solve for x
    x = 386,478,247.14/22,511.51
  6. Step 6: Final answer
    x = 17,168.03

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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.