Home / 42,841.98-64,289.58-20,657.64

Finding the Fourth Proportional to 42,841.98, 64,289.58 and 20,657.64

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Solution

The fourth proportional to 42,841.98, 64,289.58 and 20,657.64 is: 30,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,841.98 : 64,289.58 = 20,657.64 : x
  2. Step 2: Convert to fraction form
    42,841.98/64,289.58 = 20,657.64/x
  3. Step 3: Cross multiply
    42,841.98x = 64,289.58 × 20,657.64
  4. Step 4: Simplify right side
    42,841.98x = 1,328,070,999.39
  5. Step 5: Solve for x
    x = 1,328,070,999.39/42,841.98
  6. Step 6: Final answer
    x = 30,999.29

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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.