Home / 20,259.60-28,051.56-18,704.40

Finding the Fourth Proportional to 20,259.60, 28,051.56 and 18,704.40

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Solution

The fourth proportional to 20,259.60, 28,051.56 and 18,704.40 is: 25,898.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.60 : 28,051.56 = 18,704.40 : x
  2. Step 2: Convert to fraction form
    20,259.60/28,051.56 = 18,704.40/x
  3. Step 3: Cross multiply
    20,259.60x = 28,051.56 × 18,704.40
  4. Step 4: Simplify right side
    20,259.60x = 524,687,598.86
  5. Step 5: Solve for x
    x = 524,687,598.86/20,259.60
  6. Step 6: Final answer
    x = 25,898.22

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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.