Home / 13,685.30-20,528.45-6,187.43

Finding the Fourth Proportional to 13,685.30, 20,528.45 and 6,187.43

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Solution

The fourth proportional to 13,685.30, 20,528.45 and 6,187.43 is: 9,281.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.30 : 20,528.45 = 6,187.43 : x
  2. Step 2: Convert to fraction form
    13,685.30/20,528.45 = 6,187.43/x
  3. Step 3: Cross multiply
    13,685.30x = 20,528.45 × 6,187.43
  4. Step 4: Simplify right side
    13,685.30x = 127,018,347.38
  5. Step 5: Solve for x
    x = 127,018,347.38/13,685.30
  6. Step 6: Final answer
    x = 9,281.37

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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.