Home / 13,281.26-18,328.26-7,312.76

Finding the Fourth Proportional to 13,281.26, 18,328.26 and 7,312.76

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Solution

The fourth proportional to 13,281.26, 18,328.26 and 7,312.76 is: 10,091.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.26 : 18,328.26 = 7,312.76 : x
  2. Step 2: Convert to fraction form
    13,281.26/18,328.26 = 7,312.76/x
  3. Step 3: Cross multiply
    13,281.26x = 18,328.26 × 7,312.76
  4. Step 4: Simplify right side
    13,281.26x = 134,030,166.60
  5. Step 5: Solve for x
    x = 134,030,166.60/13,281.26
  6. Step 6: Final answer
    x = 10,091.68

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Double scale
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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.