Home / 15,777.89-21,774.53-10,196.45

Finding the Fourth Proportional to 15,777.89, 21,774.53 and 10,196.45

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Solution

The fourth proportional to 15,777.89, 21,774.53 and 10,196.45 is: 14,071.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,777.89 : 21,774.53 = 10,196.45 : x
  2. Step 2: Convert to fraction form
    15,777.89/21,774.53 = 10,196.45/x
  3. Step 3: Cross multiply
    15,777.89x = 21,774.53 × 10,196.45
  4. Step 4: Simplify right side
    15,777.89x = 222,022,855.44
  5. Step 5: Solve for x
    x = 222,022,855.44/15,777.89
  6. Step 6: Final answer
    x = 14,071.77

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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.