Home / 42,356.86-63,540.80-12,777.68

Finding the Fourth Proportional to 42,356.86, 63,540.80 and 12,777.68

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Solution

The fourth proportional to 42,356.86, 63,540.80 and 12,777.68 is: 19,168.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,356.86 : 63,540.80 = 12,777.68 : x
  2. Step 2: Convert to fraction form
    42,356.86/63,540.80 = 12,777.68/x
  3. Step 3: Cross multiply
    42,356.86x = 63,540.80 × 12,777.68
  4. Step 4: Simplify right side
    42,356.86x = 811,904,009.34
  5. Step 5: Solve for x
    x = 811,904,009.34/42,356.86
  6. Step 6: Final answer
    x = 19,168.18

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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.