Home / 21,579.78-32,328.18-13,235.46

Finding the Fourth Proportional to 21,579.78, 32,328.18 and 13,235.46

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Solution

The fourth proportional to 21,579.78, 32,328.18 and 13,235.46 is: 19,827.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.78 : 32,328.18 = 13,235.46 : x
  2. Step 2: Convert to fraction form
    21,579.78/32,328.18 = 13,235.46/x
  3. Step 3: Cross multiply
    21,579.78x = 32,328.18 × 13,235.46
  4. Step 4: Simplify right side
    21,579.78x = 427,878,333.26
  5. Step 5: Solve for x
    x = 427,878,333.26/21,579.78
  6. Step 6: Final answer
    x = 19,827.74

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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.