Home / 28,289.48-42,434.21-7,512.98

Finding the Fourth Proportional to 28,289.48, 42,434.21 and 7,512.98

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Solution

The fourth proportional to 28,289.48, 42,434.21 and 7,512.98 is: 11,269.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.48 : 42,434.21 = 7,512.98 : x
  2. Step 2: Convert to fraction form
    28,289.48/42,434.21 = 7,512.98/x
  3. Step 3: Cross multiply
    28,289.48x = 42,434.21 × 7,512.98
  4. Step 4: Simplify right side
    28,289.48x = 318,807,333.48
  5. Step 5: Solve for x
    x = 318,807,333.48/28,289.48
  6. Step 6: Final answer
    x = 11,269.47

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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.