Home / 20,868.71-31,303.13-6,077.99

Finding the Fourth Proportional to 20,868.71, 31,303.13 and 6,077.99

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Solution

The fourth proportional to 20,868.71, 31,303.13 and 6,077.99 is: 9,117.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.71 : 31,303.13 = 6,077.99 : x
  2. Step 2: Convert to fraction form
    20,868.71/31,303.13 = 6,077.99/x
  3. Step 3: Cross multiply
    20,868.71x = 31,303.13 × 6,077.99
  4. Step 4: Simplify right side
    20,868.71x = 190,260,158.98
  5. Step 5: Solve for x
    x = 190,260,158.98/20,868.71
  6. Step 6: Final answer
    x = 9,117.01

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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.