Home / 21,985.10-32,977.36-5,345.08

Finding the Fourth Proportional to 21,985.10, 32,977.36 and 5,345.08

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Solution

The fourth proportional to 21,985.10, 32,977.36 and 5,345.08 is: 8,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.10 : 32,977.36 = 5,345.08 : x
  2. Step 2: Convert to fraction form
    21,985.10/32,977.36 = 5,345.08/x
  3. Step 3: Cross multiply
    21,985.10x = 32,977.36 × 5,345.08
  4. Step 4: Simplify right side
    21,985.10x = 176,266,627.39
  5. Step 5: Solve for x
    x = 176,266,627.39/21,985.10
  6. Step 6: Final answer
    x = 8,017.55

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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.