Home / 10,868.10-14,998.98-6,389.64

Finding the Fourth Proportional to 10,868.10, 14,998.98 and 6,389.64

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Solution

The fourth proportional to 10,868.10, 14,998.98 and 6,389.64 is: 8,818.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,868.10 : 14,998.98 = 6,389.64 : x
  2. Step 2: Convert to fraction form
    10,868.10/14,998.98 = 6,389.64/x
  3. Step 3: Cross multiply
    10,868.10x = 14,998.98 × 6,389.64
  4. Step 4: Simplify right side
    10,868.10x = 95,838,082.57
  5. Step 5: Solve for x
    x = 95,838,082.57/10,868.10
  6. Step 6: Final answer
    x = 8,818.29

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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.