Home / 20,395.15-28,130.72-17,702.39

Finding the Fourth Proportional to 20,395.15, 28,130.72 and 17,702.39

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Solution

The fourth proportional to 20,395.15, 28,130.72 and 17,702.39 is: 24,416.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395.15 : 28,130.72 = 17,702.39 : x
  2. Step 2: Convert to fraction form
    20,395.15/28,130.72 = 17,702.39/x
  3. Step 3: Cross multiply
    20,395.15x = 28,130.72 × 17,702.39
  4. Step 4: Simplify right side
    20,395.15x = 497,980,958.24
  5. Step 5: Solve for x
    x = 497,980,958.24/20,395.15
  6. Step 6: Final answer
    x = 24,416.64

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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.