Home / 19,878.93-29,818.35-5,087.84

Finding the Fourth Proportional to 19,878.93, 29,818.35 and 5,087.84

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Solution

The fourth proportional to 19,878.93, 29,818.35 and 5,087.84 is: 7,631.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.93 : 29,818.35 = 5,087.84 : x
  2. Step 2: Convert to fraction form
    19,878.93/29,818.35 = 5,087.84/x
  3. Step 3: Cross multiply
    19,878.93x = 29,818.35 × 5,087.84
  4. Step 4: Simplify right side
    19,878.93x = 151,710,844.77
  5. Step 5: Solve for x
    x = 151,710,844.77/19,878.93
  6. Step 6: Final answer
    x = 7,631.74

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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.