Home / 12,937.51-19,392.79-8,777.87

Finding the Fourth Proportional to 12,937.51, 19,392.79 and 8,777.87

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Solution

The fourth proportional to 12,937.51, 19,392.79 and 8,777.87 is: 13,157.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,937.51 : 19,392.79 = 8,777.87 : x
  2. Step 2: Convert to fraction form
    12,937.51/19,392.79 = 8,777.87/x
  3. Step 3: Cross multiply
    12,937.51x = 19,392.79 × 8,777.87
  4. Step 4: Simplify right side
    12,937.51x = 170,227,389.56
  5. Step 5: Solve for x
    x = 170,227,389.56/12,937.51
  6. Step 6: Final answer
    x = 13,157.66

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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.