Home / 12,455.10-18,711.45-8,567.10

Finding the Fourth Proportional to 12,455.10, 18,711.45 and 8,567.10

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Solution

The fourth proportional to 12,455.10, 18,711.45 and 8,567.10 is: 12,870.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.10 : 18,711.45 = 8,567.10 : x
  2. Step 2: Convert to fraction form
    12,455.10/18,711.45 = 8,567.10/x
  3. Step 3: Cross multiply
    12,455.10x = 18,711.45 × 8,567.10
  4. Step 4: Simplify right side
    12,455.10x = 160,302,863.30
  5. Step 5: Solve for x
    x = 160,302,863.30/12,455.10
  6. Step 6: Final answer
    x = 12,870.46

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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.