Home / 10,812.90-14,921.91-6,339.30

Finding the Fourth Proportional to 10,812.90, 14,921.91 and 6,339.30

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Solution

The fourth proportional to 10,812.90, 14,921.91 and 6,339.30 is: 8,748.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.90 : 14,921.91 = 6,339.30 : x
  2. Step 2: Convert to fraction form
    10,812.90/14,921.91 = 6,339.30/x
  3. Step 3: Cross multiply
    10,812.90x = 14,921.91 × 6,339.30
  4. Step 4: Simplify right side
    10,812.90x = 94,594,464.06
  5. Step 5: Solve for x
    x = 94,594,464.06/10,812.90
  6. Step 6: Final answer
    x = 8,748.30

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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.