Home / 10,856.50-14,980.16-6,822.70

Finding the Fourth Proportional to 10,856.50, 14,980.16 and 6,822.70

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Solution

The fourth proportional to 10,856.50, 14,980.16 and 6,822.70 is: 9,414.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856.50 : 14,980.16 = 6,822.70 : x
  2. Step 2: Convert to fraction form
    10,856.50/14,980.16 = 6,822.70/x
  3. Step 3: Cross multiply
    10,856.50x = 14,980.16 × 6,822.70
  4. Step 4: Simplify right side
    10,856.50x = 102,205,137.63
  5. Step 5: Solve for x
    x = 102,205,137.63/10,856.50
  6. Step 6: Final answer
    x = 9,414.19

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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.