Home / 12,888.71-19,335.80-4,124.31

Finding the Fourth Proportional to 12,888.71, 19,335.80 and 4,124.31

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Solution

The fourth proportional to 12,888.71, 19,335.80 and 4,124.31 is: 6,187.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.71 : 19,335.80 = 4,124.31 : x
  2. Step 2: Convert to fraction form
    12,888.71/19,335.80 = 4,124.31/x
  3. Step 3: Cross multiply
    12,888.71x = 19,335.80 × 4,124.31
  4. Step 4: Simplify right side
    12,888.71x = 79,746,716.00
  5. Step 5: Solve for x
    x = 79,746,716.00/12,888.71
  6. Step 6: Final answer
    x = 6,187.33

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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.