Home / 12,888.52-19,330.98-4,124.20

Finding the Fourth Proportional to 12,888.52, 19,330.98 and 4,124.20

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Solution

The fourth proportional to 12,888.52, 19,330.98 and 4,124.20 is: 6,185.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.52 : 19,330.98 = 4,124.20 : x
  2. Step 2: Convert to fraction form
    12,888.52/19,330.98 = 4,124.20/x
  3. Step 3: Cross multiply
    12,888.52x = 19,330.98 × 4,124.20
  4. Step 4: Simplify right side
    12,888.52x = 79,724,827.72
  5. Step 5: Solve for x
    x = 79,724,827.72/12,888.52
  6. Step 6: Final answer
    x = 6,185.72

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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.