Home / 20,710.81-31,061.59-6,668.15

Finding the Fourth Proportional to 20,710.81, 31,061.59 and 6,668.15

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Solution

The fourth proportional to 20,710.81, 31,061.59 and 6,668.15 is: 10,000.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.81 : 31,061.59 = 6,668.15 : x
  2. Step 2: Convert to fraction form
    20,710.81/31,061.59 = 6,668.15/x
  3. Step 3: Cross multiply
    20,710.81x = 31,061.59 × 6,668.15
  4. Step 4: Simplify right side
    20,710.81x = 207,123,341.36
  5. Step 5: Solve for x
    x = 207,123,341.36/20,710.81
  6. Step 6: Final answer
    x = 10,000.74

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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.