Home / 18,390.60-25,378.35-10,434.38

Finding the Fourth Proportional to 18,390.60, 25,378.35 and 10,434.38

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Solution

The fourth proportional to 18,390.60, 25,378.35 and 10,434.38 is: 14,399.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.60 : 25,378.35 = 10,434.38 : x
  2. Step 2: Convert to fraction form
    18,390.60/25,378.35 = 10,434.38/x
  3. Step 3: Cross multiply
    18,390.60x = 25,378.35 × 10,434.38
  4. Step 4: Simplify right side
    18,390.60x = 264,807,220.78
  5. Step 5: Solve for x
    x = 264,807,220.78/18,390.60
  6. Step 6: Final answer
    x = 14,399.05

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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.