Home / 42,783.06-64,121.10-20,590.48

Finding the Fourth Proportional to 42,783.06, 64,121.10 and 20,590.48

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Solution

The fourth proportional to 42,783.06, 64,121.10 and 20,590.48 is: 30,859.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,783.06 : 64,121.10 = 20,590.48 : x
  2. Step 2: Convert to fraction form
    42,783.06/64,121.10 = 20,590.48/x
  3. Step 3: Cross multiply
    42,783.06x = 64,121.10 × 20,590.48
  4. Step 4: Simplify right side
    42,783.06x = 1,320,284,227.13
  5. Step 5: Solve for x
    x = 1,320,284,227.13/42,783.06
  6. Step 6: Final answer
    x = 30,859.98

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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.