Home / 13,210.58-18,230.49-7,242.62

Finding the Fourth Proportional to 13,210.58, 18,230.49 and 7,242.62

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Solution

The fourth proportional to 13,210.58, 18,230.49 and 7,242.62 is: 9,994.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.58 : 18,230.49 = 7,242.62 : x
  2. Step 2: Convert to fraction form
    13,210.58/18,230.49 = 7,242.62/x
  3. Step 3: Cross multiply
    13,210.58x = 18,230.49 × 7,242.62
  4. Step 4: Simplify right side
    13,210.58x = 132,036,511.48
  5. Step 5: Solve for x
    x = 132,036,511.48/13,210.58
  6. Step 6: Final answer
    x = 9,994.76

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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.