Home / 15,472.42-21,341.37-9,880.90

Finding the Fourth Proportional to 15,472.42, 21,341.37 and 9,880.90

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Solution

The fourth proportional to 15,472.42, 21,341.37 and 9,880.90 is: 13,628.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472.42 : 21,341.37 = 9,880.90 : x
  2. Step 2: Convert to fraction form
    15,472.42/21,341.37 = 9,880.90/x
  3. Step 3: Cross multiply
    15,472.42x = 21,341.37 × 9,880.90
  4. Step 4: Simplify right side
    15,472.42x = 210,871,942.83
  5. Step 5: Solve for x
    x = 210,871,942.83/15,472.42
  6. Step 6: Final answer
    x = 13,628.89

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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.