Home / 9,421.40-14,132.10-6,138.20

Finding the Fourth Proportional to 9,421.40, 14,132.10 and 6,138.20

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Solution

The fourth proportional to 9,421.40, 14,132.10 and 6,138.20 is: 9,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.40 : 14,132.10 = 6,138.20 : x
  2. Step 2: Convert to fraction form
    9,421.40/14,132.10 = 6,138.20/x
  3. Step 3: Cross multiply
    9,421.40x = 14,132.10 × 6,138.20
  4. Step 4: Simplify right side
    9,421.40x = 86,745,656.22
  5. Step 5: Solve for x
    x = 86,745,656.22/9,421.40
  6. Step 6: Final answer
    x = 9,207.30

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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.