Home / 22,689.79-31,311.36-12,617.84

Finding the Fourth Proportional to 22,689.79, 31,311.36 and 12,617.84

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Solution

The fourth proportional to 22,689.79, 31,311.36 and 12,617.84 is: 17,412.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,689.79 : 31,311.36 = 12,617.84 : x
  2. Step 2: Convert to fraction form
    22,689.79/31,311.36 = 12,617.84/x
  3. Step 3: Cross multiply
    22,689.79x = 31,311.36 × 12,617.84
  4. Step 4: Simplify right side
    22,689.79x = 395,081,808.94
  5. Step 5: Solve for x
    x = 395,081,808.94/22,689.79
  6. Step 6: Final answer
    x = 17,412.32

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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.