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Finding the Fourth Proportional to 10,477.80, 15,716.70 and 9,364.20

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Solution

The fourth proportional to 10,477.80, 15,716.70 and 9,364.20 is: 14,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,477.80 : 15,716.70 = 9,364.20 : x
  2. Step 2: Convert to fraction form
    10,477.80/15,716.70 = 9,364.20/x
  3. Step 3: Cross multiply
    10,477.80x = 15,716.70 × 9,364.20
  4. Step 4: Simplify right side
    10,477.80x = 147,174,322.14
  5. Step 5: Solve for x
    x = 147,174,322.14/10,477.80
  6. Step 6: Final answer
    x = 14,046.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.