Home / 13,157.81-18,152.59-8,376.51

Finding the Fourth Proportional to 13,157.81, 18,152.59 and 8,376.51

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Solution

The fourth proportional to 13,157.81, 18,152.59 and 8,376.51 is: 11,556.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.81 : 18,152.59 = 8,376.51 : x
  2. Step 2: Convert to fraction form
    13,157.81/18,152.59 = 8,376.51/x
  3. Step 3: Cross multiply
    13,157.81x = 18,152.59 × 8,376.51
  4. Step 4: Simplify right side
    13,157.81x = 152,055,414.50
  5. Step 5: Solve for x
    x = 152,055,414.50/13,157.81
  6. Step 6: Final answer
    x = 11,556.29

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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.