Home / 21,981.12-32,977.44-6,400.32

Finding the Fourth Proportional to 21,981.12, 32,977.44 and 6,400.32

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Solution

The fourth proportional to 21,981.12, 32,977.44 and 6,400.32 is: 9,602.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.12 : 32,977.44 = 6,400.32 : x
  2. Step 2: Convert to fraction form
    21,981.12/32,977.44 = 6,400.32/x
  3. Step 3: Cross multiply
    21,981.12x = 32,977.44 × 6,400.32
  4. Step 4: Simplify right side
    21,981.12x = 211,066,168.78
  5. Step 5: Solve for x
    x = 211,066,168.78/21,981.12
  6. Step 6: Final answer
    x = 9,602.16

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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.