Home / 10,378.36-15,569.20-4,138.36

Finding the Fourth Proportional to 10,378.36, 15,569.20 and 4,138.36

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Solution

The fourth proportional to 10,378.36, 15,569.20 and 4,138.36 is: 6,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.36 : 15,569.20 = 4,138.36 : x
  2. Step 2: Convert to fraction form
    10,378.36/15,569.20 = 4,138.36/x
  3. Step 3: Cross multiply
    10,378.36x = 15,569.20 × 4,138.36
  4. Step 4: Simplify right side
    10,378.36x = 64,430,954.51
  5. Step 5: Solve for x
    x = 64,430,954.51/10,378.36
  6. Step 6: Final answer
    x = 6,208.20

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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.