Home / 28,430.40-42,559.20-16,708.80

Finding the Fourth Proportional to 28,430.40, 42,559.20 and 16,708.80

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Solution

The fourth proportional to 28,430.40, 42,559.20 and 16,708.80 is: 25,012.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.40 : 42,559.20 = 16,708.80 : x
  2. Step 2: Convert to fraction form
    28,430.40/42,559.20 = 16,708.80/x
  3. Step 3: Cross multiply
    28,430.40x = 42,559.20 × 16,708.80
  4. Step 4: Simplify right side
    28,430.40x = 711,113,160.96
  5. Step 5: Solve for x
    x = 711,113,160.96/28,430.40
  6. Step 6: Final answer
    x = 25,012.42

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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.