Home / 14,142.04-21,210.28-13,439.46

Finding the Fourth Proportional to 14,142.04, 21,210.28 and 13,439.46

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Solution

The fourth proportional to 14,142.04, 21,210.28 and 13,439.46 is: 20,156.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,142.04 : 21,210.28 = 13,439.46 : x
  2. Step 2: Convert to fraction form
    14,142.04/21,210.28 = 13,439.46/x
  3. Step 3: Cross multiply
    14,142.04x = 21,210.28 × 13,439.46
  4. Step 4: Simplify right side
    14,142.04x = 285,054,709.65
  5. Step 5: Solve for x
    x = 285,054,709.65/14,142.04
  6. Step 6: Final answer
    x = 20,156.55

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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.