Home / 20,487.54-28,271.19-11,533.26

Finding the Fourth Proportional to 20,487.54, 28,271.19 and 11,533.26

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Solution

The fourth proportional to 20,487.54, 28,271.19 and 11,533.26 is: 15,914.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.54 : 28,271.19 = 11,533.26 : x
  2. Step 2: Convert to fraction form
    20,487.54/28,271.19 = 11,533.26/x
  3. Step 3: Cross multiply
    20,487.54x = 28,271.19 × 11,533.26
  4. Step 4: Simplify right side
    20,487.54x = 326,058,984.78
  5. Step 5: Solve for x
    x = 326,058,984.78/20,487.54
  6. Step 6: Final answer
    x = 15,914.99

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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.