Home / 9,420.42-13,000.14-5,228.68

Finding the Fourth Proportional to 9,420.42, 13,000.14 and 5,228.68

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Solution

The fourth proportional to 9,420.42, 13,000.14 and 5,228.68 is: 7,215.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.42 : 13,000.14 = 5,228.68 : x
  2. Step 2: Convert to fraction form
    9,420.42/13,000.14 = 5,228.68/x
  3. Step 3: Cross multiply
    9,420.42x = 13,000.14 × 5,228.68
  4. Step 4: Simplify right side
    9,420.42x = 67,973,572.02
  5. Step 5: Solve for x
    x = 67,973,572.02/9,420.42
  6. Step 6: Final answer
    x = 7,215.56

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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.