Home / 20,892.60-28,830.07-11,461.16

Finding the Fourth Proportional to 20,892.60, 28,830.07 and 11,461.16

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Solution

The fourth proportional to 20,892.60, 28,830.07 and 11,461.16 is: 15,815.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.60 : 28,830.07 = 11,461.16 : x
  2. Step 2: Convert to fraction form
    20,892.60/28,830.07 = 11,461.16/x
  3. Step 3: Cross multiply
    20,892.60x = 28,830.07 × 11,461.16
  4. Step 4: Simplify right side
    20,892.60x = 330,426,045.08
  5. Step 5: Solve for x
    x = 330,426,045.08/20,892.60
  6. Step 6: Final answer
    x = 15,815.46

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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.