Home / 9,920.28-13,690.16-5,444.45

Finding the Fourth Proportional to 9,920.28, 13,690.16 and 5,444.45

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Solution

The fourth proportional to 9,920.28, 13,690.16 and 5,444.45 is: 7,513.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.28 : 13,690.16 = 5,444.45 : x
  2. Step 2: Convert to fraction form
    9,920.28/13,690.16 = 5,444.45/x
  3. Step 3: Cross multiply
    9,920.28x = 13,690.16 × 5,444.45
  4. Step 4: Simplify right side
    9,920.28x = 74,535,364.39
  5. Step 5: Solve for x
    x = 74,535,364.39/9,920.28
  6. Step 6: Final answer
    x = 7,513.43

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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.