Home / 14,178.31-19,566.08-7,890.55

Finding the Fourth Proportional to 14,178.31, 19,566.08 and 7,890.55

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Solution

The fourth proportional to 14,178.31, 19,566.08 and 7,890.55 is: 10,888.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,178.31 : 19,566.08 = 7,890.55 : x
  2. Step 2: Convert to fraction form
    14,178.31/19,566.08 = 7,890.55/x
  3. Step 3: Cross multiply
    14,178.31x = 19,566.08 × 7,890.55
  4. Step 4: Simplify right side
    14,178.31x = 154,387,132.54
  5. Step 5: Solve for x
    x = 154,387,132.54/14,178.31
  6. Step 6: Final answer
    x = 10,888.97

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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.