Home / 13,809.16-19,056.64-7,521.53

Finding the Fourth Proportional to 13,809.16, 19,056.64 and 7,521.53

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Solution

The fourth proportional to 13,809.16, 19,056.64 and 7,521.53 is: 10,379.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.16 : 19,056.64 = 7,521.53 : x
  2. Step 2: Convert to fraction form
    13,809.16/19,056.64 = 7,521.53/x
  3. Step 3: Cross multiply
    13,809.16x = 19,056.64 × 7,521.53
  4. Step 4: Simplify right side
    13,809.16x = 143,335,089.46
  5. Step 5: Solve for x
    x = 143,335,089.46/13,809.16
  6. Step 6: Final answer
    x = 10,379.71

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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.