Home / 21,185.17-31,783.68-8,038.58

Finding the Fourth Proportional to 21,185.17, 31,783.68 and 8,038.58

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Solution

The fourth proportional to 21,185.17, 31,783.68 and 8,038.58 is: 12,060.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.17 : 31,783.68 = 8,038.58 : x
  2. Step 2: Convert to fraction form
    21,185.17/31,783.68 = 8,038.58/x
  3. Step 3: Cross multiply
    21,185.17x = 31,783.68 × 8,038.58
  4. Step 4: Simplify right side
    21,185.17x = 255,495,495.46
  5. Step 5: Solve for x
    x = 255,495,495.46/21,185.17
  6. Step 6: Final answer
    x = 12,060.11

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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.