Home / 21,985.30-32,977.66-5,345.28

Finding the Fourth Proportional to 21,985.30, 32,977.66 and 5,345.28

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Solution

The fourth proportional to 21,985.30, 32,977.66 and 5,345.28 is: 8,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.30 : 32,977.66 = 5,345.28 : x
  2. Step 2: Convert to fraction form
    21,985.30/32,977.66 = 5,345.28/x
  3. Step 3: Cross multiply
    21,985.30x = 32,977.66 × 5,345.28
  4. Step 4: Simplify right side
    21,985.30x = 176,274,826.44
  5. Step 5: Solve for x
    x = 176,274,826.44/21,985.30
  6. Step 6: Final answer
    x = 8,017.85

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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.