Home / 12,352.20-18,528.30-7,427.40

Finding the Fourth Proportional to 12,352.20, 18,528.30 and 7,427.40

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Solution

The fourth proportional to 12,352.20, 18,528.30 and 7,427.40 is: 11,141.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,352.20 : 18,528.30 = 7,427.40 : x
  2. Step 2: Convert to fraction form
    12,352.20/18,528.30 = 7,427.40/x
  3. Step 3: Cross multiply
    12,352.20x = 18,528.30 × 7,427.40
  4. Step 4: Simplify right side
    12,352.20x = 137,617,095.42
  5. Step 5: Solve for x
    x = 137,617,095.42/12,352.20
  6. Step 6: Final answer
    x = 11,141.10

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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.