Home / 14,278.13-19,703.88-7,990.50

Finding the Fourth Proportional to 14,278.13, 19,703.88 and 7,990.50

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Solution

The fourth proportional to 14,278.13, 19,703.88 and 7,990.50 is: 11,026.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.13 : 19,703.88 = 7,990.50 : x
  2. Step 2: Convert to fraction form
    14,278.13/19,703.88 = 7,990.50/x
  3. Step 3: Cross multiply
    14,278.13x = 19,703.88 × 7,990.50
  4. Step 4: Simplify right side
    14,278.13x = 157,443,853.14
  5. Step 5: Solve for x
    x = 157,443,853.14/14,278.13
  6. Step 6: Final answer
    x = 11,026.93

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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.