Home / 15,734.84-21,670.26-15,686.60

Finding the Fourth Proportional to 15,734.84, 21,670.26 and 15,686.60

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Solution

The fourth proportional to 15,734.84, 21,670.26 and 15,686.60 is: 21,603.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,734.84 : 21,670.26 = 15,686.60 : x
  2. Step 2: Convert to fraction form
    15,734.84/21,670.26 = 15,686.60/x
  3. Step 3: Cross multiply
    15,734.84x = 21,670.26 × 15,686.60
  4. Step 4: Simplify right side
    15,734.84x = 339,932,700.52
  5. Step 5: Solve for x
    x = 339,932,700.52/15,734.84
  6. Step 6: Final answer
    x = 21,603.82

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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.