Home / 19,777.86-27,301.32-12,974.47

Finding the Fourth Proportional to 19,777.86, 27,301.32 and 12,974.47

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Solution

The fourth proportional to 19,777.86, 27,301.32 and 12,974.47 is: 17,909.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,777.86 : 27,301.32 = 12,974.47 : x
  2. Step 2: Convert to fraction form
    19,777.86/27,301.32 = 12,974.47/x
  3. Step 3: Cross multiply
    19,777.86x = 27,301.32 × 12,974.47
  4. Step 4: Simplify right side
    19,777.86x = 354,220,089.05
  5. Step 5: Solve for x
    x = 354,220,089.05/19,777.86
  6. Step 6: Final answer
    x = 17,909.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.