Home / 15,421.80-23,132.70-12,651.60

Finding the Fourth Proportional to 15,421.80, 23,132.70 and 12,651.60

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Solution

The fourth proportional to 15,421.80, 23,132.70 and 12,651.60 is: 18,977.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,421.80 : 23,132.70 = 12,651.60 : x
  2. Step 2: Convert to fraction form
    15,421.80/23,132.70 = 12,651.60/x
  3. Step 3: Cross multiply
    15,421.80x = 23,132.70 × 12,651.60
  4. Step 4: Simplify right side
    15,421.80x = 292,665,667.32
  5. Step 5: Solve for x
    x = 292,665,667.32/15,421.80
  6. Step 6: Final answer
    x = 18,977.40

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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.