Home / 19,429.60-29,166.30-12,868.60

Finding the Fourth Proportional to 19,429.60, 29,166.30 and 12,868.60

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Solution

The fourth proportional to 19,429.60, 29,166.30 and 12,868.60 is: 19,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,429.60 : 29,166.30 = 12,868.60 : x
  2. Step 2: Convert to fraction form
    19,429.60/29,166.30 = 12,868.60/x
  3. Step 3: Cross multiply
    19,429.60x = 29,166.30 × 12,868.60
  4. Step 4: Simplify right side
    19,429.60x = 375,329,448.18
  5. Step 5: Solve for x
    x = 375,329,448.18/19,429.60
  6. Step 6: Final answer
    x = 19,317.40

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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.