Home / 15,728.04-21,705.66-8,656.02

Finding the Fourth Proportional to 15,728.04, 21,705.66 and 8,656.02

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Solution

The fourth proportional to 15,728.04, 21,705.66 and 8,656.02 is: 11,945.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.04 : 21,705.66 = 8,656.02 : x
  2. Step 2: Convert to fraction form
    15,728.04/21,705.66 = 8,656.02/x
  3. Step 3: Cross multiply
    15,728.04x = 21,705.66 × 8,656.02
  4. Step 4: Simplify right side
    15,728.04x = 187,884,627.07
  5. Step 5: Solve for x
    x = 187,884,627.07/15,728.04
  6. Step 6: Final answer
    x = 11,945.84

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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.