Home / 21,045.06-29,167.58-20,651.40

Finding the Fourth Proportional to 21,045.06, 29,167.58 and 20,651.40

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Solution

The fourth proportional to 21,045.06, 29,167.58 and 20,651.40 is: 28,621.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.06 : 29,167.58 = 20,651.40 : x
  2. Step 2: Convert to fraction form
    21,045.06/29,167.58 = 20,651.40/x
  3. Step 3: Cross multiply
    21,045.06x = 29,167.58 × 20,651.40
  4. Step 4: Simplify right side
    21,045.06x = 602,351,361.61
  5. Step 5: Solve for x
    x = 602,351,361.61/21,045.06
  6. Step 6: Final answer
    x = 28,621.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.