Home / 13,159.90-18,157.57-8,124.33

Finding the Fourth Proportional to 13,159.90, 18,157.57 and 8,124.33

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Solution

The fourth proportional to 13,159.90, 18,157.57 and 8,124.33 is: 11,209.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.90 : 18,157.57 = 8,124.33 : x
  2. Step 2: Convert to fraction form
    13,159.90/18,157.57 = 8,124.33/x
  3. Step 3: Cross multiply
    13,159.90x = 18,157.57 × 8,124.33
  4. Step 4: Simplify right side
    13,159.90x = 147,518,138.46
  5. Step 5: Solve for x
    x = 147,518,138.46/13,159.90
  6. Step 6: Final answer
    x = 11,209.67

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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.