Home / 13,999.93-19,319.90-7,712.30

Finding the Fourth Proportional to 13,999.93, 19,319.90 and 7,712.30

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Solution

The fourth proportional to 13,999.93, 19,319.90 and 7,712.30 is: 10,642.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.93 : 19,319.90 = 7,712.30 : x
  2. Step 2: Convert to fraction form
    13,999.93/19,319.90 = 7,712.30/x
  3. Step 3: Cross multiply
    13,999.93x = 19,319.90 × 7,712.30
  4. Step 4: Simplify right side
    13,999.93x = 149,000,932.35
  5. Step 5: Solve for x
    x = 149,000,932.35/13,999.93
  6. Step 6: Final answer
    x = 10,642.98

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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.