Home / 42,842.88-64,247.04-13,253.76

Finding the Fourth Proportional to 42,842.88, 64,247.04 and 13,253.76

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Solution

The fourth proportional to 42,842.88, 64,247.04 and 13,253.76 is: 19,875.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,842.88 : 64,247.04 = 13,253.76 : x
  2. Step 2: Convert to fraction form
    42,842.88/64,247.04 = 13,253.76/x
  3. Step 3: Cross multiply
    42,842.88x = 64,247.04 × 13,253.76
  4. Step 4: Simplify right side
    42,842.88x = 851,514,848.87
  5. Step 5: Solve for x
    x = 851,514,848.87/42,842.88
  6. Step 6: Final answer
    x = 19,875.29

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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.