Home / 13,813.86-19,062.61-8,445.28

Finding the Fourth Proportional to 13,813.86, 19,062.61 and 8,445.28

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Solution

The fourth proportional to 13,813.86, 19,062.61 and 8,445.28 is: 11,654.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.86 : 19,062.61 = 8,445.28 : x
  2. Step 2: Convert to fraction form
    13,813.86/19,062.61 = 8,445.28/x
  3. Step 3: Cross multiply
    13,813.86x = 19,062.61 × 8,445.28
  4. Step 4: Simplify right side
    13,813.86x = 160,989,105.52
  5. Step 5: Solve for x
    x = 160,989,105.52/13,813.86
  6. Step 6: Final answer
    x = 11,654.18

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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.