Home / 13,871.39-19,158.93-9,387.36

Finding the Fourth Proportional to 13,871.39, 19,158.93 and 9,387.36

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Solution

The fourth proportional to 13,871.39, 19,158.93 and 9,387.36 is: 12,965.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.39 : 19,158.93 = 9,387.36 : x
  2. Step 2: Convert to fraction form
    13,871.39/19,158.93 = 9,387.36/x
  3. Step 3: Cross multiply
    13,871.39x = 19,158.93 × 9,387.36
  4. Step 4: Simplify right side
    13,871.39x = 179,851,773.12
  5. Step 5: Solve for x
    x = 179,851,773.12/13,871.39
  6. Step 6: Final answer
    x = 12,965.67

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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.