Home / 18,403.55-25,397.93-10,854.30

Finding the Fourth Proportional to 18,403.55, 25,397.93 and 10,854.30

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Solution

The fourth proportional to 18,403.55, 25,397.93 and 10,854.30 is: 14,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.55 : 25,397.93 = 10,854.30 : x
  2. Step 2: Convert to fraction form
    18,403.55/25,397.93 = 10,854.30/x
  3. Step 3: Cross multiply
    18,403.55x = 25,397.93 × 10,854.30
  4. Step 4: Simplify right side
    18,403.55x = 275,676,751.60
  5. Step 5: Solve for x
    x = 275,676,751.60/18,403.55
  6. Step 6: Final answer
    x = 14,979.54

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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.