Home / 12,957.86-19,431.98-10,189.94

Finding the Fourth Proportional to 12,957.86, 19,431.98 and 10,189.94

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Solution

The fourth proportional to 12,957.86, 19,431.98 and 10,189.94 is: 15,281.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,957.86 : 19,431.98 = 10,189.94 : x
  2. Step 2: Convert to fraction form
    12,957.86/19,431.98 = 10,189.94/x
  3. Step 3: Cross multiply
    12,957.86x = 19,431.98 × 10,189.94
  4. Step 4: Simplify right side
    12,957.86x = 198,010,710.28
  5. Step 5: Solve for x
    x = 198,010,710.28/12,957.86
  6. Step 6: Final answer
    x = 15,281.13

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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.