Home / 20,705.04-31,055.40-5,913

Finding the Fourth Proportional to 20,705.04, 31,055.40 and 5,913

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Solution

The fourth proportional to 20,705.04, 31,055.40 and 5,913 is: 8,868.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.04 : 31,055.40 = 5,913 : x
  2. Step 2: Convert to fraction form
    20,705.04/31,055.40 = 5,913/x
  3. Step 3: Cross multiply
    20,705.04x = 31,055.40 × 5,913
  4. Step 4: Simplify right side
    20,705.04x = 183,630,580.20
  5. Step 5: Solve for x
    x = 183,630,580.20/20,705.04
  6. Step 6: Final answer
    x = 8,868.88

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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.