Home / 10,383.20-14,328.72-6,402.72

Finding the Fourth Proportional to 10,383.20, 14,328.72 and 6,402.72

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Solution

The fourth proportional to 10,383.20, 14,328.72 and 6,402.72 is: 8,835.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,383.20 : 14,328.72 = 6,402.72 : x
  2. Step 2: Convert to fraction form
    10,383.20/14,328.72 = 6,402.72/x
  3. Step 3: Cross multiply
    10,383.20x = 14,328.72 × 6,402.72
  4. Step 4: Simplify right side
    10,383.20x = 91,742,782.12
  5. Step 5: Solve for x
    x = 91,742,782.12/10,383.20
  6. Step 6: Final answer
    x = 8,835.69

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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.