Home / 15,825.98-21,840.30-8,752.86

Finding the Fourth Proportional to 15,825.98, 21,840.30 and 8,752.86

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Solution

The fourth proportional to 15,825.98, 21,840.30 and 8,752.86 is: 12,079.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,825.98 : 21,840.30 = 8,752.86 : x
  2. Step 2: Convert to fraction form
    15,825.98/21,840.30 = 8,752.86/x
  3. Step 3: Cross multiply
    15,825.98x = 21,840.30 × 8,752.86
  4. Step 4: Simplify right side
    15,825.98x = 191,165,088.26
  5. Step 5: Solve for x
    x = 191,165,088.26/15,825.98
  6. Step 6: Final answer
    x = 12,079.19

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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.