Home / 15,696.30-21,651.85-9,405.03

Finding the Fourth Proportional to 15,696.30, 21,651.85 and 9,405.03

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Solution

The fourth proportional to 15,696.30, 21,651.85 and 9,405.03 is: 12,973.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.30 : 21,651.85 = 9,405.03 : x
  2. Step 2: Convert to fraction form
    15,696.30/21,651.85 = 9,405.03/x
  3. Step 3: Cross multiply
    15,696.30x = 21,651.85 × 9,405.03
  4. Step 4: Simplify right side
    15,696.30x = 203,636,298.81
  5. Step 5: Solve for x
    x = 203,636,298.81/15,696.30
  6. Step 6: Final answer
    x = 12,973.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.