Home / 21,868.20-32,802.30-9,386.10

Finding the Fourth Proportional to 21,868.20, 32,802.30 and 9,386.10

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Solution

The fourth proportional to 21,868.20, 32,802.30 and 9,386.10 is: 14,079.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.20 : 32,802.30 = 9,386.10 : x
  2. Step 2: Convert to fraction form
    21,868.20/32,802.30 = 9,386.10/x
  3. Step 3: Cross multiply
    21,868.20x = 32,802.30 × 9,386.10
  4. Step 4: Simplify right side
    21,868.20x = 307,885,668.03
  5. Step 5: Solve for x
    x = 307,885,668.03/21,868.20
  6. Step 6: Final answer
    x = 14,079.15

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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.