Home / 15,051.89-20,778.45-10,748.20

Finding the Fourth Proportional to 15,051.89, 20,778.45 and 10,748.20

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Solution

The fourth proportional to 15,051.89, 20,778.45 and 10,748.20 is: 14,837.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,051.89 : 20,778.45 = 10,748.20 : x
  2. Step 2: Convert to fraction form
    15,051.89/20,778.45 = 10,748.20/x
  3. Step 3: Cross multiply
    15,051.89x = 20,778.45 × 10,748.20
  4. Step 4: Simplify right side
    15,051.89x = 223,330,832.40
  5. Step 5: Solve for x
    x = 223,330,832.40/15,051.89
  6. Step 6: Final answer
    x = 14,837.40

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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.