Home / 19,878.18-29,817.24-5,087.10

Finding the Fourth Proportional to 19,878.18, 29,817.24 and 5,087.10

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Solution

The fourth proportional to 19,878.18, 29,817.24 and 5,087.10 is: 7,630.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.18 : 29,817.24 = 5,087.10 : x
  2. Step 2: Convert to fraction form
    19,878.18/29,817.24 = 5,087.10/x
  3. Step 3: Cross multiply
    19,878.18x = 29,817.24 × 5,087.10
  4. Step 4: Simplify right side
    19,878.18x = 151,683,281.60
  5. Step 5: Solve for x
    x = 151,683,281.60/19,878.18
  6. Step 6: Final answer
    x = 7,630.64

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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.