Home / 15,821.24-21,830.15-8,746.29

Finding the Fourth Proportional to 15,821.24, 21,830.15 and 8,746.29

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Solution

The fourth proportional to 15,821.24, 21,830.15 and 8,746.29 is: 12,068.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.24 : 21,830.15 = 8,746.29 : x
  2. Step 2: Convert to fraction form
    15,821.24/21,830.15 = 8,746.29/x
  3. Step 3: Cross multiply
    15,821.24x = 21,830.15 × 8,746.29
  4. Step 4: Simplify right side
    15,821.24x = 190,932,855.35
  5. Step 5: Solve for x
    x = 190,932,855.35/15,821.24
  6. Step 6: Final answer
    x = 12,068.14

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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.