Home / 13,809.24-19,056.02-7,840.76

Finding the Fourth Proportional to 13,809.24, 19,056.02 and 7,840.76

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Solution

The fourth proportional to 13,809.24, 19,056.02 and 7,840.76 is: 10,819.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.24 : 19,056.02 = 7,840.76 : x
  2. Step 2: Convert to fraction form
    13,809.24/19,056.02 = 7,840.76/x
  3. Step 3: Cross multiply
    13,809.24x = 19,056.02 × 7,840.76
  4. Step 4: Simplify right side
    13,809.24x = 149,413,679.38
  5. Step 5: Solve for x
    x = 149,413,679.38/13,809.24
  6. Step 6: Final answer
    x = 10,819.83

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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.