Home / 15,389.92-21,230.48-9,646.34

Finding the Fourth Proportional to 15,389.92, 21,230.48 and 9,646.34

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Solution

The fourth proportional to 15,389.92, 21,230.48 and 9,646.34 is: 13,307.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.92 : 21,230.48 = 9,646.34 : x
  2. Step 2: Convert to fraction form
    15,389.92/21,230.48 = 9,646.34/x
  3. Step 3: Cross multiply
    15,389.92x = 21,230.48 × 9,646.34
  4. Step 4: Simplify right side
    15,389.92x = 204,796,428.44
  5. Step 5: Solve for x
    x = 204,796,428.44/15,389.92
  6. Step 6: Final answer
    x = 13,307.18

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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.