Home / 13,870.12-19,141.14-8,284.36

Finding the Fourth Proportional to 13,870.12, 19,141.14 and 8,284.36

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Solution

The fourth proportional to 13,870.12, 19,141.14 and 8,284.36 is: 11,432.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.12 : 19,141.14 = 8,284.36 : x
  2. Step 2: Convert to fraction form
    13,870.12/19,141.14 = 8,284.36/x
  3. Step 3: Cross multiply
    13,870.12x = 19,141.14 × 8,284.36
  4. Step 4: Simplify right side
    13,870.12x = 158,572,094.57
  5. Step 5: Solve for x
    x = 158,572,094.57/13,870.12
  6. Step 6: Final answer
    x = 11,432.64

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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.