Home / 12,637.39-18,919.38-7,356.28

Finding the Fourth Proportional to 12,637.39, 18,919.38 and 7,356.28

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Solution

The fourth proportional to 12,637.39, 18,919.38 and 7,356.28 is: 11,013.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,637.39 : 18,919.38 = 7,356.28 : x
  2. Step 2: Convert to fraction form
    12,637.39/18,919.38 = 7,356.28/x
  3. Step 3: Cross multiply
    12,637.39x = 18,919.38 × 7,356.28
  4. Step 4: Simplify right side
    12,637.39x = 139,176,256.71
  5. Step 5: Solve for x
    x = 139,176,256.71/12,637.39
  6. Step 6: Final answer
    x = 11,013.05

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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.