Home / 22,423.04-30,942.12-12,989.84

Finding the Fourth Proportional to 22,423.04, 30,942.12 and 12,989.84

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Solution

The fourth proportional to 22,423.04, 30,942.12 and 12,989.84 is: 17,925.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,423.04 : 30,942.12 = 12,989.84 : x
  2. Step 2: Convert to fraction form
    22,423.04/30,942.12 = 12,989.84/x
  3. Step 3: Cross multiply
    22,423.04x = 30,942.12 × 12,989.84
  4. Step 4: Simplify right side
    22,423.04x = 401,933,188.06
  5. Step 5: Solve for x
    x = 401,933,188.06/22,423.04
  6. Step 6: Final answer
    x = 17,925.01

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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.