Home / 10,157.28-14,020.92-6,621.36

Finding the Fourth Proportional to 10,157.28, 14,020.92 and 6,621.36

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Solution

The fourth proportional to 10,157.28, 14,020.92 and 6,621.36 is: 9,140.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,157.28 : 14,020.92 = 6,621.36 : x
  2. Step 2: Convert to fraction form
    10,157.28/14,020.92 = 6,621.36/x
  3. Step 3: Cross multiply
    10,157.28x = 14,020.92 × 6,621.36
  4. Step 4: Simplify right side
    10,157.28x = 92,837,558.85
  5. Step 5: Solve for x
    x = 92,837,558.85/10,157.28
  6. Step 6: Final answer
    x = 9,140.00

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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.