Home / 18,426.81-25,429-10,043.31

Finding the Fourth Proportional to 18,426.81, 25,429 and 10,043.31

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Solution

The fourth proportional to 18,426.81, 25,429 and 10,043.31 is: 13,859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.81 : 25,429 = 10,043.31 : x
  2. Step 2: Convert to fraction form
    18,426.81/25,429 = 10,043.31/x
  3. Step 3: Cross multiply
    18,426.81x = 25,429 × 10,043.31
  4. Step 4: Simplify right side
    18,426.81x = 255,391,329.99
  5. Step 5: Solve for x
    x = 255,391,329.99/18,426.81
  6. Step 6: Final answer
    x = 13,859.77

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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.