Home / 20,541.08-28,346.64-11,109.80

Finding the Fourth Proportional to 20,541.08, 28,346.64 and 11,109.80

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Solution

The fourth proportional to 20,541.08, 28,346.64 and 11,109.80 is: 15,331.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.08 : 28,346.64 = 11,109.80 : x
  2. Step 2: Convert to fraction form
    20,541.08/28,346.64 = 11,109.80/x
  3. Step 3: Cross multiply
    20,541.08x = 28,346.64 × 11,109.80
  4. Step 4: Simplify right side
    20,541.08x = 314,925,501.07
  5. Step 5: Solve for x
    x = 314,925,501.07/20,541.08
  6. Step 6: Final answer
    x = 15,331.50

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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.