Home / 12,289.19-18,439.85-5,707.53

Finding the Fourth Proportional to 12,289.19, 18,439.85 and 5,707.53

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Solution

The fourth proportional to 12,289.19, 18,439.85 and 5,707.53 is: 8,564.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.19 : 18,439.85 = 5,707.53 : x
  2. Step 2: Convert to fraction form
    12,289.19/18,439.85 = 5,707.53/x
  3. Step 3: Cross multiply
    12,289.19x = 18,439.85 × 5,707.53
  4. Step 4: Simplify right side
    12,289.19x = 105,246,011.34
  5. Step 5: Solve for x
    x = 105,246,011.34/12,289.19
  6. Step 6: Final answer
    x = 8,564.12

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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.