Home / 18,931.09-28,360.24-10,585.80

Finding the Fourth Proportional to 18,931.09, 28,360.24 and 10,585.80

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Solution

The fourth proportional to 18,931.09, 28,360.24 and 10,585.80 is: 15,858.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.09 : 28,360.24 = 10,585.80 : x
  2. Step 2: Convert to fraction form
    18,931.09/28,360.24 = 10,585.80/x
  3. Step 3: Cross multiply
    18,931.09x = 28,360.24 × 10,585.80
  4. Step 4: Simplify right side
    18,931.09x = 300,215,828.59
  5. Step 5: Solve for x
    x = 300,215,828.59/18,931.09
  6. Step 6: Final answer
    x = 15,858.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.