Home / 65,697.12-98,560.08-21,328.32

Finding the Fourth Proportional to 65,697.12, 98,560.08 and 21,328.32

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Solution

The fourth proportional to 65,697.12, 98,560.08 and 21,328.32 is: 31,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,697.12 : 98,560.08 = 21,328.32 : x
  2. Step 2: Convert to fraction form
    65,697.12/98,560.08 = 21,328.32/x
  3. Step 3: Cross multiply
    65,697.12x = 98,560.08 × 21,328.32
  4. Step 4: Simplify right side
    65,697.12x = 2,102,120,925.47
  5. Step 5: Solve for x
    x = 2,102,120,925.47/65,697.12
  6. Step 6: Final answer
    x = 31,997.15

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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.