Home / 42,987.69-64,493.46-18,021.87

Finding the Fourth Proportional to 42,987.69, 64,493.46 and 18,021.87

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Solution

The fourth proportional to 42,987.69, 64,493.46 and 18,021.87 is: 27,037.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,987.69 : 64,493.46 = 18,021.87 : x
  2. Step 2: Convert to fraction form
    42,987.69/64,493.46 = 18,021.87/x
  3. Step 3: Cross multiply
    42,987.69x = 64,493.46 × 18,021.87
  4. Step 4: Simplify right side
    42,987.69x = 1,162,292,751.97
  5. Step 5: Solve for x
    x = 1,162,292,751.97/42,987.69
  6. Step 6: Final answer
    x = 27,037.80

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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.