Home / 18,765.63-28,148.46-4,725.66

Finding the Fourth Proportional to 18,765.63, 28,148.46 and 4,725.66

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Solution

The fourth proportional to 18,765.63, 28,148.46 and 4,725.66 is: 7,088.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.63 : 28,148.46 = 4,725.66 : x
  2. Step 2: Convert to fraction form
    18,765.63/28,148.46 = 4,725.66/x
  3. Step 3: Cross multiply
    18,765.63x = 28,148.46 × 4,725.66
  4. Step 4: Simplify right side
    18,765.63x = 133,020,051.48
  5. Step 5: Solve for x
    x = 133,020,051.48/18,765.63
  6. Step 6: Final answer
    x = 7,088.49

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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.