Home / 20,677.60-31,015.81-6,637.52

Finding the Fourth Proportional to 20,677.60, 31,015.81 and 6,637.52

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Solution

The fourth proportional to 20,677.60, 31,015.81 and 6,637.52 is: 9,956.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.60 : 31,015.81 = 6,637.52 : x
  2. Step 2: Convert to fraction form
    20,677.60/31,015.81 = 6,637.52/x
  3. Step 3: Cross multiply
    20,677.60x = 31,015.81 × 6,637.52
  4. Step 4: Simplify right side
    20,677.60x = 205,867,870.92
  5. Step 5: Solve for x
    x = 205,867,870.92/20,677.60
  6. Step 6: Final answer
    x = 9,956.08

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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.