Home / 13,459.90-20,165.55-11,904.70

Finding the Fourth Proportional to 13,459.90, 20,165.55 and 11,904.70

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Solution

The fourth proportional to 13,459.90, 20,165.55 and 11,904.70 is: 17,835.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.90 : 20,165.55 = 11,904.70 : x
  2. Step 2: Convert to fraction form
    13,459.90/20,165.55 = 11,904.70/x
  3. Step 3: Cross multiply
    13,459.90x = 20,165.55 × 11,904.70
  4. Step 4: Simplify right side
    13,459.90x = 240,064,823.09
  5. Step 5: Solve for x
    x = 240,064,823.09/13,459.90
  6. Step 6: Final answer
    x = 17,835.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.