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Finding the Fourth Proportional to 28,807.77, 43,213.03 and 13,999.05

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Solution

The fourth proportional to 28,807.77, 43,213.03 and 13,999.05 is: 20,999.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.77 : 43,213.03 = 13,999.05 : x
  2. Step 2: Convert to fraction form
    28,807.77/43,213.03 = 13,999.05/x
  3. Step 3: Cross multiply
    28,807.77x = 43,213.03 × 13,999.05
  4. Step 4: Simplify right side
    28,807.77x = 604,941,332.62
  5. Step 5: Solve for x
    x = 604,941,332.62/28,807.77
  6. Step 6: Final answer
    x = 20,999.24

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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.