Home / 15,312.98-21,131.38-9,354.62

Finding the Fourth Proportional to 15,312.98, 21,131.38 and 9,354.62

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Solution

The fourth proportional to 15,312.98, 21,131.38 and 9,354.62 is: 12,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.98 : 21,131.38 = 9,354.62 : x
  2. Step 2: Convert to fraction form
    15,312.98/21,131.38 = 9,354.62/x
  3. Step 3: Cross multiply
    15,312.98x = 21,131.38 × 9,354.62
  4. Step 4: Simplify right side
    15,312.98x = 197,676,094.50
  5. Step 5: Solve for x
    x = 197,676,094.50/15,312.98
  6. Step 6: Final answer
    x = 12,909.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.