Home / 10,142.80-15,214.20-7,032.40

Finding the Fourth Proportional to 10,142.80, 15,214.20 and 7,032.40

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Solution

The fourth proportional to 10,142.80, 15,214.20 and 7,032.40 is: 10,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.80 : 15,214.20 = 7,032.40 : x
  2. Step 2: Convert to fraction form
    10,142.80/15,214.20 = 7,032.40/x
  3. Step 3: Cross multiply
    10,142.80x = 15,214.20 × 7,032.40
  4. Step 4: Simplify right side
    10,142.80x = 106,992,340.08
  5. Step 5: Solve for x
    x = 106,992,340.08/10,142.80
  6. Step 6: Final answer
    x = 10,548.60

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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.