Home / 13,999.66-19,318.64-7,712.02

Finding the Fourth Proportional to 13,999.66, 19,318.64 and 7,712.02

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Solution

The fourth proportional to 13,999.66, 19,318.64 and 7,712.02 is: 10,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.66 : 19,318.64 = 7,712.02 : x
  2. Step 2: Convert to fraction form
    13,999.66/19,318.64 = 7,712.02/x
  3. Step 3: Cross multiply
    13,999.66x = 19,318.64 × 7,712.02
  4. Step 4: Simplify right side
    13,999.66x = 148,985,738.05
  5. Step 5: Solve for x
    x = 148,985,738.05/13,999.66
  6. Step 6: Final answer
    x = 10,642.10

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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.