Home / 13,780.30-20,670.44-5,015.28

Finding the Fourth Proportional to 13,780.30, 20,670.44 and 5,015.28

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Solution

The fourth proportional to 13,780.30, 20,670.44 and 5,015.28 is: 7,522.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.30 : 20,670.44 = 5,015.28 : x
  2. Step 2: Convert to fraction form
    13,780.30/20,670.44 = 5,015.28/x
  3. Step 3: Cross multiply
    13,780.30x = 20,670.44 × 5,015.28
  4. Step 4: Simplify right side
    13,780.30x = 103,668,044.32
  5. Step 5: Solve for x
    x = 103,668,044.32/13,780.30
  6. Step 6: Final answer
    x = 7,522.92

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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.