Home / 13,774.56-19,002.52-9,989.40

Finding the Fourth Proportional to 13,774.56, 19,002.52 and 9,989.40

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Solution

The fourth proportional to 13,774.56, 19,002.52 and 9,989.40 is: 13,780.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,774.56 : 19,002.52 = 9,989.40 : x
  2. Step 2: Convert to fraction form
    13,774.56/19,002.52 = 9,989.40/x
  3. Step 3: Cross multiply
    13,774.56x = 19,002.52 × 9,989.40
  4. Step 4: Simplify right side
    13,774.56x = 189,823,773.29
  5. Step 5: Solve for x
    x = 189,823,773.29/13,774.56
  6. Step 6: Final answer
    x = 13,780.75

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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.