Home / 13,323.76-18,385.79-7,658.51

Finding the Fourth Proportional to 13,323.76, 18,385.79 and 7,658.51

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Solution

The fourth proportional to 13,323.76, 18,385.79 and 7,658.51 is: 10,568.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,323.76 : 18,385.79 = 7,658.51 : x
  2. Step 2: Convert to fraction form
    13,323.76/18,385.79 = 7,658.51/x
  3. Step 3: Cross multiply
    13,323.76x = 18,385.79 × 7,658.51
  4. Step 4: Simplify right side
    13,323.76x = 140,807,756.57
  5. Step 5: Solve for x
    x = 140,807,756.57/13,323.76
  6. Step 6: Final answer
    x = 10,568.17

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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.