Home / 18,685.09-25,784.13-10,509.92

Finding the Fourth Proportional to 18,685.09, 25,784.13 and 10,509.92

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Solution

The fourth proportional to 18,685.09, 25,784.13 and 10,509.92 is: 14,502.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.09 : 25,784.13 = 10,509.92 : x
  2. Step 2: Convert to fraction form
    18,685.09/25,784.13 = 10,509.92/x
  3. Step 3: Cross multiply
    18,685.09x = 25,784.13 × 10,509.92
  4. Step 4: Simplify right side
    18,685.09x = 270,989,143.57
  5. Step 5: Solve for x
    x = 270,989,143.57/18,685.09
  6. Step 6: Final answer
    x = 14,502.96

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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.