Home / 13,020.75-17,970.12-7,357.77

Finding the Fourth Proportional to 13,020.75, 17,970.12 and 7,357.77

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Solution

The fourth proportional to 13,020.75, 17,970.12 and 7,357.77 is: 10,154.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.75 : 17,970.12 = 7,357.77 : x
  2. Step 2: Convert to fraction form
    13,020.75/17,970.12 = 7,357.77/x
  3. Step 3: Cross multiply
    13,020.75x = 17,970.12 × 7,357.77
  4. Step 4: Simplify right side
    13,020.75x = 132,220,009.83
  5. Step 5: Solve for x
    x = 132,220,009.83/13,020.75
  6. Step 6: Final answer
    x = 10,154.56

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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.