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Finding the Fourth Proportional to 18,750.51, 28,125.69 and 5,602.86

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Solution

The fourth proportional to 18,750.51, 28,125.69 and 5,602.86 is: 8,404.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.51 : 28,125.69 = 5,602.86 : x
  2. Step 2: Convert to fraction form
    18,750.51/28,125.69 = 5,602.86/x
  3. Step 3: Cross multiply
    18,750.51x = 28,125.69 × 5,602.86
  4. Step 4: Simplify right side
    18,750.51x = 157,584,303.47
  5. Step 5: Solve for x
    x = 157,584,303.47/18,750.51
  6. Step 6: Final answer
    x = 8,404.27

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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.