Home / 42,949.34-64,449.12-17,987.28

Finding the Fourth Proportional to 42,949.34, 64,449.12 and 17,987.28

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Solution

The fourth proportional to 42,949.34, 64,449.12 and 17,987.28 is: 26,991.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,949.34 : 64,449.12 = 17,987.28 : x
  2. Step 2: Convert to fraction form
    42,949.34/64,449.12 = 17,987.28/x
  3. Step 3: Cross multiply
    42,949.34x = 64,449.12 × 17,987.28
  4. Step 4: Simplify right side
    42,949.34x = 1,159,264,367.19
  5. Step 5: Solve for x
    x = 1,159,264,367.19/42,949.34
  6. Step 6: Final answer
    x = 26,991.44

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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.