Home / 11,870.61-16,381.55-6,565.78

Finding the Fourth Proportional to 11,870.61, 16,381.55 and 6,565.78

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Solution

The fourth proportional to 11,870.61, 16,381.55 and 6,565.78 is: 9,060.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,870.61 : 16,381.55 = 6,565.78 : x
  2. Step 2: Convert to fraction form
    11,870.61/16,381.55 = 6,565.78/x
  3. Step 3: Cross multiply
    11,870.61x = 16,381.55 × 6,565.78
  4. Step 4: Simplify right side
    11,870.61x = 107,557,653.36
  5. Step 5: Solve for x
    x = 107,557,653.36/11,870.61
  6. Step 6: Final answer
    x = 9,060.84

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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.