Home / 15,740.01-21,720.38-8,665.06

Finding the Fourth Proportional to 15,740.01, 21,720.38 and 8,665.06

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Solution

The fourth proportional to 15,740.01, 21,720.38 and 8,665.06 is: 11,957.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.01 : 21,720.38 = 8,665.06 : x
  2. Step 2: Convert to fraction form
    15,740.01/21,720.38 = 8,665.06/x
  3. Step 3: Cross multiply
    15,740.01x = 21,720.38 × 8,665.06
  4. Step 4: Simplify right side
    15,740.01x = 188,208,395.92
  5. Step 5: Solve for x
    x = 188,208,395.92/15,740.01
  6. Step 6: Final answer
    x = 11,957.32

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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.