Home / 13,135.52-18,125.40-7,470.24

Finding the Fourth Proportional to 13,135.52, 18,125.40 and 7,470.24

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Solution

The fourth proportional to 13,135.52, 18,125.40 and 7,470.24 is: 10,308.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.52 : 18,125.40 = 7,470.24 : x
  2. Step 2: Convert to fraction form
    13,135.52/18,125.40 = 7,470.24/x
  3. Step 3: Cross multiply
    13,135.52x = 18,125.40 × 7,470.24
  4. Step 4: Simplify right side
    13,135.52x = 135,401,088.10
  5. Step 5: Solve for x
    x = 135,401,088.10/13,135.52
  6. Step 6: Final answer
    x = 10,308.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.