Home / 19,431.90-29,143.40-9,436.28

Finding the Fourth Proportional to 19,431.90, 29,143.40 and 9,436.28

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Solution

The fourth proportional to 19,431.90, 29,143.40 and 9,436.28 is: 14,152.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.90 : 29,143.40 = 9,436.28 : x
  2. Step 2: Convert to fraction form
    19,431.90/29,143.40 = 9,436.28/x
  3. Step 3: Cross multiply
    19,431.90x = 29,143.40 × 9,436.28
  4. Step 4: Simplify right side
    19,431.90x = 275,005,089.65
  5. Step 5: Solve for x
    x = 275,005,089.65/19,431.90
  6. Step 6: Final answer
    x = 14,152.25

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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.