Home / 20,501.55-28,292.28-11,548.20

Finding the Fourth Proportional to 20,501.55, 28,292.28 and 11,548.20

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Solution

The fourth proportional to 20,501.55, 28,292.28 and 11,548.20 is: 15,936.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501.55 : 28,292.28 = 11,548.20 : x
  2. Step 2: Convert to fraction form
    20,501.55/28,292.28 = 11,548.20/x
  3. Step 3: Cross multiply
    20,501.55x = 28,292.28 × 11,548.20
  4. Step 4: Simplify right side
    20,501.55x = 326,724,907.90
  5. Step 5: Solve for x
    x = 326,724,907.90/20,501.55
  6. Step 6: Final answer
    x = 15,936.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.