Home / 31,419.60-43,358.40-18,848.40

Finding the Fourth Proportional to 31,419.60, 43,358.40 and 18,848.40

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Solution

The fourth proportional to 31,419.60, 43,358.40 and 18,848.40 is: 26,010.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,419.60 : 43,358.40 = 18,848.40 : x
  2. Step 2: Convert to fraction form
    31,419.60/43,358.40 = 18,848.40/x
  3. Step 3: Cross multiply
    31,419.60x = 43,358.40 × 18,848.40
  4. Step 4: Simplify right side
    31,419.60x = 817,236,466.56
  5. Step 5: Solve for x
    x = 817,236,466.56/31,419.60
  6. Step 6: Final answer
    x = 26,010.40

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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.