Home / 21,777.23-30,043.94-12,810.53

Finding the Fourth Proportional to 21,777.23, 30,043.94 and 12,810.53

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Solution

The fourth proportional to 21,777.23, 30,043.94 and 12,810.53 is: 17,673.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.23 : 30,043.94 = 12,810.53 : x
  2. Step 2: Convert to fraction form
    21,777.23/30,043.94 = 12,810.53/x
  3. Step 3: Cross multiply
    21,777.23x = 30,043.94 × 12,810.53
  4. Step 4: Simplify right side
    21,777.23x = 384,878,794.69
  5. Step 5: Solve for x
    x = 384,878,794.69/21,777.23
  6. Step 6: Final answer
    x = 17,673.45

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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.