Home / 28,920.80-43,389.30-14,130.20

Finding the Fourth Proportional to 28,920.80, 43,389.30 and 14,130.20

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Solution

The fourth proportional to 28,920.80, 43,389.30 and 14,130.20 is: 21,199.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.80 : 43,389.30 = 14,130.20 : x
  2. Step 2: Convert to fraction form
    28,920.80/43,389.30 = 14,130.20/x
  3. Step 3: Cross multiply
    28,920.80x = 43,389.30 × 14,130.20
  4. Step 4: Simplify right side
    28,920.80x = 613,099,486.86
  5. Step 5: Solve for x
    x = 613,099,486.86/28,920.80
  6. Step 6: Final answer
    x = 21,199.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.