Home / 15,317.20-21,137.76-8,948.16

Finding the Fourth Proportional to 15,317.20, 21,137.76 and 8,948.16

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Solution

The fourth proportional to 15,317.20, 21,137.76 and 8,948.16 is: 12,348.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.20 : 21,137.76 = 8,948.16 : x
  2. Step 2: Convert to fraction form
    15,317.20/21,137.76 = 8,948.16/x
  3. Step 3: Cross multiply
    15,317.20x = 21,137.76 × 8,948.16
  4. Step 4: Simplify right side
    15,317.20x = 189,144,058.52
  5. Step 5: Solve for x
    x = 189,144,058.52/15,317.20
  6. Step 6: Final answer
    x = 12,348.47

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1.5x scale

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.