Home / 14,278.08-19,703.64-7,990.56

Finding the Fourth Proportional to 14,278.08, 19,703.64 and 7,990.56

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Solution

The fourth proportional to 14,278.08, 19,703.64 and 7,990.56 is: 11,026.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.08 : 19,703.64 = 7,990.56 : x
  2. Step 2: Convert to fraction form
    14,278.08/19,703.64 = 7,990.56/x
  3. Step 3: Cross multiply
    14,278.08x = 19,703.64 × 7,990.56
  4. Step 4: Simplify right side
    14,278.08x = 157,443,117.64
  5. Step 5: Solve for x
    x = 157,443,117.64/14,278.08
  6. Step 6: Final answer
    x = 11,026.91

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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.