Home / 9,987.03-13,779.64-6,105.45

Finding the Fourth Proportional to 9,987.03, 13,779.64 and 6,105.45

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Solution

The fourth proportional to 9,987.03, 13,779.64 and 6,105.45 is: 8,424.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.03 : 13,779.64 = 6,105.45 : x
  2. Step 2: Convert to fraction form
    9,987.03/13,779.64 = 6,105.45/x
  3. Step 3: Cross multiply
    9,987.03x = 13,779.64 × 6,105.45
  4. Step 4: Simplify right side
    9,987.03x = 84,130,903.04
  5. Step 5: Solve for x
    x = 84,130,903.04/9,987.03
  6. Step 6: Final answer
    x = 8,424.02

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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.