Home / 13,118.24-18,100.16-7,451.60

Finding the Fourth Proportional to 13,118.24, 18,100.16 and 7,451.60

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Solution

The fourth proportional to 13,118.24, 18,100.16 and 7,451.60 is: 10,281.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.24 : 18,100.16 = 7,451.60 : x
  2. Step 2: Convert to fraction form
    13,118.24/18,100.16 = 7,451.60/x
  3. Step 3: Cross multiply
    13,118.24x = 18,100.16 × 7,451.60
  4. Step 4: Simplify right side
    13,118.24x = 134,875,152.26
  5. Step 5: Solve for x
    x = 134,875,152.26/13,118.24
  6. Step 6: Final answer
    x = 10,281.50

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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.