Home / 13,809.13-19,056.80-7,521.50

Finding the Fourth Proportional to 13,809.13, 19,056.80 and 7,521.50

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Solution

The fourth proportional to 13,809.13, 19,056.80 and 7,521.50 is: 10,379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.13 : 19,056.80 = 7,521.50 : x
  2. Step 2: Convert to fraction form
    13,809.13/19,056.80 = 7,521.50/x
  3. Step 3: Cross multiply
    13,809.13x = 19,056.80 × 7,521.50
  4. Step 4: Simplify right side
    13,809.13x = 143,335,721.20
  5. Step 5: Solve for x
    x = 143,335,721.20/13,809.13
  6. Step 6: Final answer
    x = 10,379.78

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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.