Home / 18,830.86-25,986.45-10,447.36

Finding the Fourth Proportional to 18,830.86, 25,986.45 and 10,447.36

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Solution

The fourth proportional to 18,830.86, 25,986.45 and 10,447.36 is: 14,417.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.86 : 25,986.45 = 10,447.36 : x
  2. Step 2: Convert to fraction form
    18,830.86/25,986.45 = 10,447.36/x
  3. Step 3: Cross multiply
    18,830.86x = 25,986.45 × 10,447.36
  4. Step 4: Simplify right side
    18,830.86x = 271,489,798.27
  5. Step 5: Solve for x
    x = 271,489,798.27/18,830.86
  6. Step 6: Final answer
    x = 14,417.28

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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.