Home / 28,351.20-42,526.80-18,501.60

Finding the Fourth Proportional to 28,351.20, 42,526.80 and 18,501.60

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Solution

The fourth proportional to 28,351.20, 42,526.80 and 18,501.60 is: 27,752.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,351.20 : 42,526.80 = 18,501.60 : x
  2. Step 2: Convert to fraction form
    28,351.20/42,526.80 = 18,501.60/x
  3. Step 3: Cross multiply
    28,351.20x = 42,526.80 × 18,501.60
  4. Step 4: Simplify right side
    28,351.20x = 786,813,842.88
  5. Step 5: Solve for x
    x = 786,813,842.88/28,351.20
  6. Step 6: Final answer
    x = 27,752.40

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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.