Home / 9,903.39-13,666.86-5,426.88

Finding the Fourth Proportional to 9,903.39, 13,666.86 and 5,426.88

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Solution

The fourth proportional to 9,903.39, 13,666.86 and 5,426.88 is: 7,489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.39 : 13,666.86 = 5,426.88 : x
  2. Step 2: Convert to fraction form
    9,903.39/13,666.86 = 5,426.88/x
  3. Step 3: Cross multiply
    9,903.39x = 13,666.86 × 5,426.88
  4. Step 4: Simplify right side
    9,903.39x = 74,168,409.20
  5. Step 5: Solve for x
    x = 74,168,409.20/9,903.39
  6. Step 6: Final answer
    x = 7,489.19

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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.