Home / 23,118.90-31,895.55-15,165.51

Finding the Fourth Proportional to 23,118.90, 31,895.55 and 15,165.51

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Solution

The fourth proportional to 23,118.90, 31,895.55 and 15,165.51 is: 20,922.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,118.90 : 31,895.55 = 15,165.51 : x
  2. Step 2: Convert to fraction form
    23,118.90/31,895.55 = 15,165.51/x
  3. Step 3: Cross multiply
    23,118.90x = 31,895.55 × 15,165.51
  4. Step 4: Simplify right side
    23,118.90x = 483,712,282.48
  5. Step 5: Solve for x
    x = 483,712,282.48/23,118.90
  6. Step 6: Final answer
    x = 20,922.81

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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.