Home / 9,903.80-13,666.74-5,426.75

Finding the Fourth Proportional to 9,903.80, 13,666.74 and 5,426.75

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Solution

The fourth proportional to 9,903.80, 13,666.74 and 5,426.75 is: 7,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.80 : 13,666.74 = 5,426.75 : x
  2. Step 2: Convert to fraction form
    9,903.80/13,666.74 = 5,426.75/x
  3. Step 3: Cross multiply
    9,903.80x = 13,666.74 × 5,426.75
  4. Step 4: Simplify right side
    9,903.80x = 74,165,981.30
  5. Step 5: Solve for x
    x = 74,165,981.30/9,903.80
  6. Step 6: Final answer
    x = 7,488.64

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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.