Home / 13,410.94-18,515.24-10,421.14

Finding the Fourth Proportional to 13,410.94, 18,515.24 and 10,421.14

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Solution

The fourth proportional to 13,410.94, 18,515.24 and 10,421.14 is: 14,387.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.94 : 18,515.24 = 10,421.14 : x
  2. Step 2: Convert to fraction form
    13,410.94/18,515.24 = 10,421.14/x
  3. Step 3: Cross multiply
    13,410.94x = 18,515.24 × 10,421.14
  4. Step 4: Simplify right side
    13,410.94x = 192,949,908.17
  5. Step 5: Solve for x
    x = 192,949,908.17/13,410.94
  6. Step 6: Final answer
    x = 14,387.50

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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.