Home / 13,809.97-19,057.08-7,840.86

Finding the Fourth Proportional to 13,809.97, 19,057.08 and 7,840.86

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Solution

The fourth proportional to 13,809.97, 19,057.08 and 7,840.86 is: 10,820.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.97 : 19,057.08 = 7,840.86 : x
  2. Step 2: Convert to fraction form
    13,809.97/19,057.08 = 7,840.86/x
  3. Step 3: Cross multiply
    13,809.97x = 19,057.08 × 7,840.86
  4. Step 4: Simplify right side
    13,809.97x = 149,423,896.29
  5. Step 5: Solve for x
    x = 149,423,896.29/13,809.97
  6. Step 6: Final answer
    x = 10,820.00

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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.