Home / 11,320.57-15,637.35-9,438.31

Finding the Fourth Proportional to 11,320.57, 15,637.35 and 9,438.31

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Solution

The fourth proportional to 11,320.57, 15,637.35 and 9,438.31 is: 13,037.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.57 : 15,637.35 = 9,438.31 : x
  2. Step 2: Convert to fraction form
    11,320.57/15,637.35 = 9,438.31/x
  3. Step 3: Cross multiply
    11,320.57x = 15,637.35 × 9,438.31
  4. Step 4: Simplify right side
    11,320.57x = 147,590,156.88
  5. Step 5: Solve for x
    x = 147,590,156.88/11,320.57
  6. Step 6: Final answer
    x = 13,037.34

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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.