Home / 13,214.12-19,807.81-8,287.19

Finding the Fourth Proportional to 13,214.12, 19,807.81 and 8,287.19

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Solution

The fourth proportional to 13,214.12, 19,807.81 and 8,287.19 is: 12,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,214.12 : 19,807.81 = 8,287.19 : x
  2. Step 2: Convert to fraction form
    13,214.12/19,807.81 = 8,287.19/x
  3. Step 3: Cross multiply
    13,214.12x = 19,807.81 × 8,287.19
  4. Step 4: Simplify right side
    13,214.12x = 164,151,039.48
  5. Step 5: Solve for x
    x = 164,151,039.48/13,214.12
  6. Step 6: Final answer
    x = 12,422.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.