Home / 10,087.50-13,913.44-7,779.36

Finding the Fourth Proportional to 10,087.50, 13,913.44 and 7,779.36

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Solution

The fourth proportional to 10,087.50, 13,913.44 and 7,779.36 is: 10,729.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,087.50 : 13,913.44 = 7,779.36 : x
  2. Step 2: Convert to fraction form
    10,087.50/13,913.44 = 7,779.36/x
  3. Step 3: Cross multiply
    10,087.50x = 13,913.44 × 7,779.36
  4. Step 4: Simplify right side
    10,087.50x = 108,237,658.60
  5. Step 5: Solve for x
    x = 108,237,658.60/10,087.50
  6. Step 6: Final answer
    x = 10,729.88

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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.