Home / 31,409.64-43,347.78-17,985.12

Finding the Fourth Proportional to 31,409.64, 43,347.78 and 17,985.12

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Solution

The fourth proportional to 31,409.64, 43,347.78 and 17,985.12 is: 24,820.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.64 : 43,347.78 = 17,985.12 : x
  2. Step 2: Convert to fraction form
    31,409.64/43,347.78 = 17,985.12/x
  3. Step 3: Cross multiply
    31,409.64x = 43,347.78 × 17,985.12
  4. Step 4: Simplify right side
    31,409.64x = 779,615,025.03
  5. Step 5: Solve for x
    x = 779,615,025.03/31,409.64
  6. Step 6: Final answer
    x = 24,820.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.