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Finding the Fourth Proportional to 28,900.80, 43,365.60 and 16,430.40

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Solution

The fourth proportional to 28,900.80, 43,365.60 and 16,430.40 is: 24,653.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,900.80 : 43,365.60 = 16,430.40 : x
  2. Step 2: Convert to fraction form
    28,900.80/43,365.60 = 16,430.40/x
  3. Step 3: Cross multiply
    28,900.80x = 43,365.60 × 16,430.40
  4. Step 4: Simplify right side
    28,900.80x = 712,514,154.24
  5. Step 5: Solve for x
    x = 712,514,154.24/28,900.80
  6. Step 6: Final answer
    x = 24,653.79

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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.