Home / 13,778.13-19,008.36-8,996.55

Finding the Fourth Proportional to 13,778.13, 19,008.36 and 8,996.55

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Solution

The fourth proportional to 13,778.13, 19,008.36 and 8,996.55 is: 12,411.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.13 : 19,008.36 = 8,996.55 : x
  2. Step 2: Convert to fraction form
    13,778.13/19,008.36 = 8,996.55/x
  3. Step 3: Cross multiply
    13,778.13x = 19,008.36 × 8,996.55
  4. Step 4: Simplify right side
    13,778.13x = 171,009,661.16
  5. Step 5: Solve for x
    x = 171,009,661.16/13,778.13
  6. Step 6: Final answer
    x = 12,411.67

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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.