Home / 13,778.51-19,014.35-7,490.88

Finding the Fourth Proportional to 13,778.51, 19,014.35 and 7,490.88

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Solution

The fourth proportional to 13,778.51, 19,014.35 and 7,490.88 is: 10,337.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.51 : 19,014.35 = 7,490.88 : x
  2. Step 2: Convert to fraction form
    13,778.51/19,014.35 = 7,490.88/x
  3. Step 3: Cross multiply
    13,778.51x = 19,014.35 × 7,490.88
  4. Step 4: Simplify right side
    13,778.51x = 142,434,176.67
  5. Step 5: Solve for x
    x = 142,434,176.67/13,778.51
  6. Step 6: Final answer
    x = 10,337.42

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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.