Home / 21,030.53-29,022.80-12,079.85

Finding the Fourth Proportional to 21,030.53, 29,022.80 and 12,079.85

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Solution

The fourth proportional to 21,030.53, 29,022.80 and 12,079.85 is: 16,670.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.53 : 29,022.80 = 12,079.85 : x
  2. Step 2: Convert to fraction form
    21,030.53/29,022.80 = 12,079.85/x
  3. Step 3: Cross multiply
    21,030.53x = 29,022.80 × 12,079.85
  4. Step 4: Simplify right side
    21,030.53x = 350,590,865.07
  5. Step 5: Solve for x
    x = 350,590,865.07/21,030.53
  6. Step 6: Final answer
    x = 16,670.57

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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.