Home / 34,705.40-47,892.88-18,789.72

Finding the Fourth Proportional to 34,705.40, 47,892.88 and 18,789.72

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Solution

The fourth proportional to 34,705.40, 47,892.88 and 18,789.72 is: 25,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,705.40 : 47,892.88 = 18,789.72 : x
  2. Step 2: Convert to fraction form
    34,705.40/47,892.88 = 18,789.72/x
  3. Step 3: Cross multiply
    34,705.40x = 47,892.88 × 18,789.72
  4. Step 4: Simplify right side
    34,705.40x = 899,893,805.19
  5. Step 5: Solve for x
    x = 899,893,805.19/34,705.40
  6. Step 6: Final answer
    x = 25,929.50

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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.