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Finding the Fourth Proportional to 9,428.57, 14,127.70 and 6,918.08

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Solution

The fourth proportional to 9,428.57, 14,127.70 and 6,918.08 is: 10,365.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,428.57 : 14,127.70 = 6,918.08 : x
  2. Step 2: Convert to fraction form
    9,428.57/14,127.70 = 6,918.08/x
  3. Step 3: Cross multiply
    9,428.57x = 14,127.70 × 6,918.08
  4. Step 4: Simplify right side
    9,428.57x = 97,736,483.85
  5. Step 5: Solve for x
    x = 97,736,483.85/9,428.57
  6. Step 6: Final answer
    x = 10,365.99

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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.