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Finding the Fourth Proportional to 15,207.01, 20,985.08 and 8,492.51

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Solution

The fourth proportional to 15,207.01, 20,985.08 and 8,492.51 is: 11,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,207.01 : 20,985.08 = 8,492.51 : x
  2. Step 2: Convert to fraction form
    15,207.01/20,985.08 = 8,492.51/x
  3. Step 3: Cross multiply
    15,207.01x = 20,985.08 × 8,492.51
  4. Step 4: Simplify right side
    15,207.01x = 178,216,011.75
  5. Step 5: Solve for x
    x = 178,216,011.75/15,207.01
  6. Step 6: Final answer
    x = 11,719.33

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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.