Home / 19,395.32-29,142.18-12,378.69

Finding the Fourth Proportional to 19,395.32, 29,142.18 and 12,378.69

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Solution

The fourth proportional to 19,395.32, 29,142.18 and 12,378.69 is: 18,599.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,395.32 : 29,142.18 = 12,378.69 : x
  2. Step 2: Convert to fraction form
    19,395.32/29,142.18 = 12,378.69/x
  3. Step 3: Cross multiply
    19,395.32x = 29,142.18 × 12,378.69
  4. Step 4: Simplify right side
    19,395.32x = 360,742,012.14
  5. Step 5: Solve for x
    x = 360,742,012.14/19,395.32
  6. Step 6: Final answer
    x = 18,599.44

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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.