Home / 13,291.90-18,342.81-7,323.57

Finding the Fourth Proportional to 13,291.90, 18,342.81 and 7,323.57

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Solution

The fourth proportional to 13,291.90, 18,342.81 and 7,323.57 is: 10,106.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.90 : 18,342.81 = 7,323.57 : x
  2. Step 2: Convert to fraction form
    13,291.90/18,342.81 = 7,323.57/x
  3. Step 3: Cross multiply
    13,291.90x = 18,342.81 × 7,323.57
  4. Step 4: Simplify right side
    13,291.90x = 134,334,853.03
  5. Step 5: Solve for x
    x = 134,334,853.03/13,291.90
  6. Step 6: Final answer
    x = 10,106.52

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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.