Home / 9,903.57-13,666.37-5,426.43

Finding the Fourth Proportional to 9,903.57, 13,666.37 and 5,426.43

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Solution

The fourth proportional to 9,903.57, 13,666.37 and 5,426.43 is: 7,488.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.57 : 13,666.37 = 5,426.43 : x
  2. Step 2: Convert to fraction form
    9,903.57/13,666.37 = 5,426.43/x
  3. Step 3: Cross multiply
    9,903.57x = 13,666.37 × 5,426.43
  4. Step 4: Simplify right side
    9,903.57x = 74,159,573.03
  5. Step 5: Solve for x
    x = 74,159,573.03/9,903.57
  6. Step 6: Final answer
    x = 7,488.17

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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.