Home / 9,728.08-13,430.28-6,425.68

Finding the Fourth Proportional to 9,728.08, 13,430.28 and 6,425.68

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Solution

The fourth proportional to 9,728.08, 13,430.28 and 6,425.68 is: 8,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,728.08 : 13,430.28 = 6,425.68 : x
  2. Step 2: Convert to fraction form
    9,728.08/13,430.28 = 6,425.68/x
  3. Step 3: Cross multiply
    9,728.08x = 13,430.28 × 6,425.68
  4. Step 4: Simplify right side
    9,728.08x = 86,298,681.59
  5. Step 5: Solve for x
    x = 86,298,681.59/9,728.08
  6. Step 6: Final answer
    x = 8,871.09

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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.