Home / 22,486.23-31,002.12-18,438.21

Finding the Fourth Proportional to 22,486.23, 31,002.12 and 18,438.21

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Solution

The fourth proportional to 22,486.23, 31,002.12 and 18,438.21 is: 25,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,486.23 : 31,002.12 = 18,438.21 : x
  2. Step 2: Convert to fraction form
    22,486.23/31,002.12 = 18,438.21/x
  3. Step 3: Cross multiply
    22,486.23x = 31,002.12 × 18,438.21
  4. Step 4: Simplify right side
    22,486.23x = 571,623,599.01
  5. Step 5: Solve for x
    x = 571,623,599.01/22,486.23
  6. Step 6: Final answer
    x = 25,421.05

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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.