Home / 28,520.30-42,787.74-10,985.42

Finding the Fourth Proportional to 28,520.30, 42,787.74 and 10,985.42

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Solution

The fourth proportional to 28,520.30, 42,787.74 and 10,985.42 is: 16,480.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.30 : 42,787.74 = 10,985.42 : x
  2. Step 2: Convert to fraction form
    28,520.30/42,787.74 = 10,985.42/x
  3. Step 3: Cross multiply
    28,520.30x = 42,787.74 × 10,985.42
  4. Step 4: Simplify right side
    28,520.30x = 470,041,294.75
  5. Step 5: Solve for x
    x = 470,041,294.75/28,520.30
  6. Step 6: Final answer
    x = 16,480.94

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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.