Home / 13,572.12-18,730.20-7,603.40

Finding the Fourth Proportional to 13,572.12, 18,730.20 and 7,603.40

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Solution

The fourth proportional to 13,572.12, 18,730.20 and 7,603.40 is: 10,493.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.12 : 18,730.20 = 7,603.40 : x
  2. Step 2: Convert to fraction form
    13,572.12/18,730.20 = 7,603.40/x
  3. Step 3: Cross multiply
    13,572.12x = 18,730.20 × 7,603.40
  4. Step 4: Simplify right side
    13,572.12x = 142,413,202.68
  5. Step 5: Solve for x
    x = 142,413,202.68/13,572.12
  6. Step 6: Final answer
    x = 10,493.07

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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.