Home / 15,365.40-21,204.50-9,077.76

Finding the Fourth Proportional to 15,365.40, 21,204.50 and 9,077.76

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Solution

The fourth proportional to 15,365.40, 21,204.50 and 9,077.76 is: 12,527.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,365.40 : 21,204.50 = 9,077.76 : x
  2. Step 2: Convert to fraction form
    15,365.40/21,204.50 = 9,077.76/x
  3. Step 3: Cross multiply
    15,365.40x = 21,204.50 × 9,077.76
  4. Step 4: Simplify right side
    15,365.40x = 192,489,361.92
  5. Step 5: Solve for x
    x = 192,489,361.92/15,365.40
  6. Step 6: Final answer
    x = 12,527.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.