Home / 12,258.90-18,369.45-9,124.20

Finding the Fourth Proportional to 12,258.90, 18,369.45 and 9,124.20

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Solution

The fourth proportional to 12,258.90, 18,369.45 and 9,124.20 is: 13,672.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,258.90 : 18,369.45 = 9,124.20 : x
  2. Step 2: Convert to fraction form
    12,258.90/18,369.45 = 9,124.20/x
  3. Step 3: Cross multiply
    12,258.90x = 18,369.45 × 9,124.20
  4. Step 4: Simplify right side
    12,258.90x = 167,606,535.69
  5. Step 5: Solve for x
    x = 167,606,535.69/12,258.90
  6. Step 6: Final answer
    x = 13,672.23

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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.