Home / 12,975.80-19,431.30-8,569.40

Finding the Fourth Proportional to 12,975.80, 19,431.30 and 8,569.40

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Solution

The fourth proportional to 12,975.80, 19,431.30 and 8,569.40 is: 12,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.80 : 19,431.30 = 8,569.40 : x
  2. Step 2: Convert to fraction form
    12,975.80/19,431.30 = 8,569.40/x
  3. Step 3: Cross multiply
    12,975.80x = 19,431.30 × 8,569.40
  4. Step 4: Simplify right side
    12,975.80x = 166,514,582.22
  5. Step 5: Solve for x
    x = 166,514,582.22/12,975.80
  6. Step 6: Final answer
    x = 12,832.70

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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.