Home / 13,281.26-18,327.74-7,312.91

Finding the Fourth Proportional to 13,281.26, 18,327.74 and 7,312.91

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Solution

The fourth proportional to 13,281.26, 18,327.74 and 7,312.91 is: 10,091.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.26 : 18,327.74 = 7,312.91 : x
  2. Step 2: Convert to fraction form
    13,281.26/18,327.74 = 7,312.91/x
  3. Step 3: Cross multiply
    13,281.26x = 18,327.74 × 7,312.91
  4. Step 4: Simplify right side
    13,281.26x = 134,028,984.92
  5. Step 5: Solve for x
    x = 134,028,984.92/13,281.26
  6. Step 6: Final answer
    x = 10,091.59

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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.