Home / 15,646.20-21,569.40-11,162.28

Finding the Fourth Proportional to 15,646.20, 21,569.40 and 11,162.28

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Solution

The fourth proportional to 15,646.20, 21,569.40 and 11,162.28 is: 15,388.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,646.20 : 21,569.40 = 11,162.28 : x
  2. Step 2: Convert to fraction form
    15,646.20/21,569.40 = 11,162.28/x
  3. Step 3: Cross multiply
    15,646.20x = 21,569.40 × 11,162.28
  4. Step 4: Simplify right side
    15,646.20x = 240,763,682.23
  5. Step 5: Solve for x
    x = 240,763,682.23/15,646.20
  6. Step 6: Final answer
    x = 15,388.00

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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.