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Finding the Fourth Proportional to 10,559.56, 14,571.78 and 6,312.99

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Solution

The fourth proportional to 10,559.56, 14,571.78 and 6,312.99 is: 8,711.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,559.56 : 14,571.78 = 6,312.99 : x
  2. Step 2: Convert to fraction form
    10,559.56/14,571.78 = 6,312.99/x
  3. Step 3: Cross multiply
    10,559.56x = 14,571.78 × 6,312.99
  4. Step 4: Simplify right side
    10,559.56x = 91,991,501.42
  5. Step 5: Solve for x
    x = 91,991,501.42/10,559.56
  6. Step 6: Final answer
    x = 8,711.68

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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.