Home / 13,426.49-18,528.54-7,458.71

Finding the Fourth Proportional to 13,426.49, 18,528.54 and 7,458.71

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Solution

The fourth proportional to 13,426.49, 18,528.54 and 7,458.71 is: 10,293.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.49 : 18,528.54 = 7,458.71 : x
  2. Step 2: Convert to fraction form
    13,426.49/18,528.54 = 7,458.71/x
  3. Step 3: Cross multiply
    13,426.49x = 18,528.54 × 7,458.71
  4. Step 4: Simplify right side
    13,426.49x = 138,198,983.42
  5. Step 5: Solve for x
    x = 138,198,983.42/13,426.49
  6. Step 6: Final answer
    x = 10,293.01

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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.