Home / 42,714.74-64,078.23-13,135.05

Finding the Fourth Proportional to 42,714.74, 64,078.23 and 13,135.05

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Solution

The fourth proportional to 42,714.74, 64,078.23 and 13,135.05 is: 19,704.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,714.74 : 64,078.23 = 13,135.05 : x
  2. Step 2: Convert to fraction form
    42,714.74/64,078.23 = 13,135.05/x
  3. Step 3: Cross multiply
    42,714.74x = 64,078.23 × 13,135.05
  4. Step 4: Simplify right side
    42,714.74x = 841,670,754.96
  5. Step 5: Solve for x
    x = 841,670,754.96/42,714.74
  6. Step 6: Final answer
    x = 19,704.46

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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.