Home / 13,439.84-20,069.18-10,979.52

Finding the Fourth Proportional to 13,439.84, 20,069.18 and 10,979.52

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Solution

The fourth proportional to 13,439.84, 20,069.18 and 10,979.52 is: 16,395.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.84 : 20,069.18 = 10,979.52 : x
  2. Step 2: Convert to fraction form
    13,439.84/20,069.18 = 10,979.52/x
  3. Step 3: Cross multiply
    13,439.84x = 20,069.18 × 10,979.52
  4. Step 4: Simplify right side
    13,439.84x = 220,349,963.19
  5. Step 5: Solve for x
    x = 220,349,963.19/13,439.84
  6. Step 6: Final answer
    x = 16,395.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.