Home / 13,965.18-19,272.15-7,677.78

Finding the Fourth Proportional to 13,965.18, 19,272.15 and 7,677.78

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Solution

The fourth proportional to 13,965.18, 19,272.15 and 7,677.78 is: 10,595.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.18 : 19,272.15 = 7,677.78 : x
  2. Step 2: Convert to fraction form
    13,965.18/19,272.15 = 7,677.78/x
  3. Step 3: Cross multiply
    13,965.18x = 19,272.15 × 7,677.78
  4. Step 4: Simplify right side
    13,965.18x = 147,967,327.83
  5. Step 5: Solve for x
    x = 147,967,327.83/13,965.18
  6. Step 6: Final answer
    x = 10,595.45

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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.