Home / 21,685.85-32,541.08-9,999.07

Finding the Fourth Proportional to 21,685.85, 32,541.08 and 9,999.07

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Solution

The fourth proportional to 21,685.85, 32,541.08 and 9,999.07 is: 15,004.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.85 : 32,541.08 = 9,999.07 : x
  2. Step 2: Convert to fraction form
    21,685.85/32,541.08 = 9,999.07/x
  3. Step 3: Cross multiply
    21,685.85x = 32,541.08 × 9,999.07
  4. Step 4: Simplify right side
    21,685.85x = 325,380,539.15
  5. Step 5: Solve for x
    x = 325,380,539.15/21,685.85
  6. Step 6: Final answer
    x = 15,004.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.