Home / 13,291.39-18,341.88-7,323.61

Finding the Fourth Proportional to 13,291.39, 18,341.88 and 7,323.61

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Solution

The fourth proportional to 13,291.39, 18,341.88 and 7,323.61 is: 10,106.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.39 : 18,341.88 = 7,323.61 : x
  2. Step 2: Convert to fraction form
    13,291.39/18,341.88 = 7,323.61/x
  3. Step 3: Cross multiply
    13,291.39x = 18,341.88 × 7,323.61
  4. Step 4: Simplify right side
    13,291.39x = 134,328,775.79
  5. Step 5: Solve for x
    x = 134,328,775.79/13,291.39
  6. Step 6: Final answer
    x = 10,106.45

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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.