Home / 10,129.04-15,191.63-4,289.75

Finding the Fourth Proportional to 10,129.04, 15,191.63 and 4,289.75

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Solution

The fourth proportional to 10,129.04, 15,191.63 and 4,289.75 is: 6,433.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.04 : 15,191.63 = 4,289.75 : x
  2. Step 2: Convert to fraction form
    10,129.04/15,191.63 = 4,289.75/x
  3. Step 3: Cross multiply
    10,129.04x = 15,191.63 × 4,289.75
  4. Step 4: Simplify right side
    10,129.04x = 65,168,294.79
  5. Step 5: Solve for x
    x = 65,168,294.79/10,129.04
  6. Step 6: Final answer
    x = 6,433.81

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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.