Home / 15,840.52-21,859.85-9,127.34

Finding the Fourth Proportional to 15,840.52, 21,859.85 and 9,127.34

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Solution

The fourth proportional to 15,840.52, 21,859.85 and 9,127.34 is: 12,595.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.52 : 21,859.85 = 9,127.34 : x
  2. Step 2: Convert to fraction form
    15,840.52/21,859.85 = 9,127.34/x
  3. Step 3: Cross multiply
    15,840.52x = 21,859.85 × 9,127.34
  4. Step 4: Simplify right side
    15,840.52x = 199,522,315.13
  5. Step 5: Solve for x
    x = 199,522,315.13/15,840.52
  6. Step 6: Final answer
    x = 12,595.69

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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.