Home / 10,342.20-14,284.26-6,821.40

Finding the Fourth Proportional to 10,342.20, 14,284.26 and 6,821.40

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Solution

The fourth proportional to 10,342.20, 14,284.26 and 6,821.40 is: 9,421.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,342.20 : 14,284.26 = 6,821.40 : x
  2. Step 2: Convert to fraction form
    10,342.20/14,284.26 = 6,821.40/x
  3. Step 3: Cross multiply
    10,342.20x = 14,284.26 × 6,821.40
  4. Step 4: Simplify right side
    10,342.20x = 97,438,651.16
  5. Step 5: Solve for x
    x = 97,438,651.16/10,342.20
  6. Step 6: Final answer
    x = 9,421.46

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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.