Home / 12,888.30-19,332.48-4,123.92

Finding the Fourth Proportional to 12,888.30, 19,332.48 and 4,123.92

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Solution

The fourth proportional to 12,888.30, 19,332.48 and 4,123.92 is: 6,185.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.30 : 19,332.48 = 4,123.92 : x
  2. Step 2: Convert to fraction form
    12,888.30/19,332.48 = 4,123.92/x
  3. Step 3: Cross multiply
    12,888.30x = 19,332.48 × 4,123.92
  4. Step 4: Simplify right side
    12,888.30x = 79,725,600.92
  5. Step 5: Solve for x
    x = 79,725,600.92/12,888.30
  6. Step 6: Final answer
    x = 6,185.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.