Home / 12,365.40-18,567.90-11,455.80

Finding the Fourth Proportional to 12,365.40, 18,567.90 and 11,455.80

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Solution

The fourth proportional to 12,365.40, 18,567.90 and 11,455.80 is: 17,202.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365.40 : 18,567.90 = 11,455.80 : x
  2. Step 2: Convert to fraction form
    12,365.40/18,567.90 = 11,455.80/x
  3. Step 3: Cross multiply
    12,365.40x = 18,567.90 × 11,455.80
  4. Step 4: Simplify right side
    12,365.40x = 212,710,148.82
  5. Step 5: Solve for x
    x = 212,710,148.82/12,365.40
  6. Step 6: Final answer
    x = 17,202.04

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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.