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Finding the Fourth Proportional to 21,802.69, 32,709.30 and 7,012.99

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Solution

The fourth proportional to 21,802.69, 32,709.30 and 7,012.99 is: 10,521.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,802.69 : 32,709.30 = 7,012.99 : x
  2. Step 2: Convert to fraction form
    21,802.69/32,709.30 = 7,012.99/x
  3. Step 3: Cross multiply
    21,802.69x = 32,709.30 × 7,012.99
  4. Step 4: Simplify right side
    21,802.69x = 229,389,993.81
  5. Step 5: Solve for x
    x = 229,389,993.81/21,802.69
  6. Step 6: Final answer
    x = 10,521.18

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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.