Home / 18,749.70-28,127.28-6,909.14

Finding the Fourth Proportional to 18,749.70, 28,127.28 and 6,909.14

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Solution

The fourth proportional to 18,749.70, 28,127.28 and 6,909.14 is: 10,364.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.70 : 28,127.28 = 6,909.14 : x
  2. Step 2: Convert to fraction form
    18,749.70/28,127.28 = 6,909.14/x
  3. Step 3: Cross multiply
    18,749.70x = 28,127.28 × 6,909.14
  4. Step 4: Simplify right side
    18,749.70x = 194,335,315.34
  5. Step 5: Solve for x
    x = 194,335,315.34/18,749.70
  6. Step 6: Final answer
    x = 10,364.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.