Home / 20,818.95-31,225.29-7,668.24

Finding the Fourth Proportional to 20,818.95, 31,225.29 and 7,668.24

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Solution

The fourth proportional to 20,818.95, 31,225.29 and 7,668.24 is: 11,501.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.95 : 31,225.29 = 7,668.24 : x
  2. Step 2: Convert to fraction form
    20,818.95/31,225.29 = 7,668.24/x
  3. Step 3: Cross multiply
    20,818.95x = 31,225.29 × 7,668.24
  4. Step 4: Simplify right side
    20,818.95x = 239,443,017.79
  5. Step 5: Solve for x
    x = 239,443,017.79/20,818.95
  6. Step 6: Final answer
    x = 11,501.21

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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.