Home / 28,004.90-42,006.45-9,285.80

Finding the Fourth Proportional to 28,004.90, 42,006.45 and 9,285.80

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Solution

The fourth proportional to 28,004.90, 42,006.45 and 9,285.80 is: 13,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.90 : 42,006.45 = 9,285.80 : x
  2. Step 2: Convert to fraction form
    28,004.90/42,006.45 = 9,285.80/x
  3. Step 3: Cross multiply
    28,004.90x = 42,006.45 × 9,285.80
  4. Step 4: Simplify right side
    28,004.90x = 390,063,493.41
  5. Step 5: Solve for x
    x = 390,063,493.41/28,004.90
  6. Step 6: Final answer
    x = 13,928.40

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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.