Home / 18,768.04-25,890.78-12,397.12

Finding the Fourth Proportional to 18,768.04, 25,890.78 and 12,397.12

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Solution

The fourth proportional to 18,768.04, 25,890.78 and 12,397.12 is: 17,102.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.04 : 25,890.78 = 12,397.12 : x
  2. Step 2: Convert to fraction form
    18,768.04/25,890.78 = 12,397.12/x
  3. Step 3: Cross multiply
    18,768.04x = 25,890.78 × 12,397.12
  4. Step 4: Simplify right side
    18,768.04x = 320,971,106.55
  5. Step 5: Solve for x
    x = 320,971,106.55/18,768.04
  6. Step 6: Final answer
    x = 17,102.00

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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.