Home / 18,720.47-25,834.05-10,222.58

Finding the Fourth Proportional to 18,720.47, 25,834.05 and 10,222.58

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Solution

The fourth proportional to 18,720.47, 25,834.05 and 10,222.58 is: 14,107.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.47 : 25,834.05 = 10,222.58 : x
  2. Step 2: Convert to fraction form
    18,720.47/25,834.05 = 10,222.58/x
  3. Step 3: Cross multiply
    18,720.47x = 25,834.05 × 10,222.58
  4. Step 4: Simplify right side
    18,720.47x = 264,090,642.85
  5. Step 5: Solve for x
    x = 264,090,642.85/18,720.47
  6. Step 6: Final answer
    x = 14,107.05

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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.