Home / 16,515.60-24,775.80-5,420.40

Finding the Fourth Proportional to 16,515.60, 24,775.80 and 5,420.40

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Solution

The fourth proportional to 16,515.60, 24,775.80 and 5,420.40 is: 8,131.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,515.60 : 24,775.80 = 5,420.40 : x
  2. Step 2: Convert to fraction form
    16,515.60/24,775.80 = 5,420.40/x
  3. Step 3: Cross multiply
    16,515.60x = 24,775.80 × 5,420.40
  4. Step 4: Simplify right side
    16,515.60x = 134,294,746.32
  5. Step 5: Solve for x
    x = 134,294,746.32/16,515.60
  6. Step 6: Final answer
    x = 8,131.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.