Home / 18,780.61-28,152.39-10,464.55

Finding the Fourth Proportional to 18,780.61, 28,152.39 and 10,464.55

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Solution

The fourth proportional to 18,780.61, 28,152.39 and 10,464.55 is: 15,686.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.61 : 28,152.39 = 10,464.55 : x
  2. Step 2: Convert to fraction form
    18,780.61/28,152.39 = 10,464.55/x
  3. Step 3: Cross multiply
    18,780.61x = 28,152.39 × 10,464.55
  4. Step 4: Simplify right side
    18,780.61x = 294,602,092.77
  5. Step 5: Solve for x
    x = 294,602,092.77/18,780.61
  6. Step 6: Final answer
    x = 15,686.50

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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.