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Finding the Fourth Proportional to 10,360.40, 14,293.10 and 7,218.40

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Solution

The fourth proportional to 10,360.40, 14,293.10 and 7,218.40 is: 9,958.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,360.40 : 14,293.10 = 7,218.40 : x
  2. Step 2: Convert to fraction form
    10,360.40/14,293.10 = 7,218.40/x
  3. Step 3: Cross multiply
    10,360.40x = 14,293.10 × 7,218.40
  4. Step 4: Simplify right side
    10,360.40x = 103,173,313.04
  5. Step 5: Solve for x
    x = 103,173,313.04/10,360.40
  6. Step 6: Final answer
    x = 9,958.43

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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.