Home / 13,864.80-19,158.36-9,878.88

Finding the Fourth Proportional to 13,864.80, 19,158.36 and 9,878.88

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Solution

The fourth proportional to 13,864.80, 19,158.36 and 9,878.88 is: 13,650.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.80 : 19,158.36 = 9,878.88 : x
  2. Step 2: Convert to fraction form
    13,864.80/19,158.36 = 9,878.88/x
  3. Step 3: Cross multiply
    13,864.80x = 19,158.36 × 9,878.88
  4. Step 4: Simplify right side
    13,864.80x = 189,263,139.44
  5. Step 5: Solve for x
    x = 189,263,139.44/13,864.80
  6. Step 6: Final answer
    x = 13,650.62

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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.