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Finding the Fourth Proportional to 12,159.57, 18,239.36 and 2,925.57

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Solution

The fourth proportional to 12,159.57, 18,239.36 and 2,925.57 is: 4,388.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.57 : 18,239.36 = 2,925.57 : x
  2. Step 2: Convert to fraction form
    12,159.57/18,239.36 = 2,925.57/x
  3. Step 3: Cross multiply
    12,159.57x = 18,239.36 × 2,925.57
  4. Step 4: Simplify right side
    12,159.57x = 53,360,509.81
  5. Step 5: Solve for x
    x = 53,360,509.81/12,159.57
  6. Step 6: Final answer
    x = 4,388.36

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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.