Home / 10,919.29-15,048.64-7,929.93

Finding the Fourth Proportional to 10,919.29, 15,048.64 and 7,929.93

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Solution

The fourth proportional to 10,919.29, 15,048.64 and 7,929.93 is: 10,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.29 : 15,048.64 = 7,929.93 : x
  2. Step 2: Convert to fraction form
    10,919.29/15,048.64 = 7,929.93/x
  3. Step 3: Cross multiply
    10,919.29x = 15,048.64 × 7,929.93
  4. Step 4: Simplify right side
    10,919.29x = 119,334,683.53
  5. Step 5: Solve for x
    x = 119,334,683.53/10,919.29
  6. Step 6: Final answer
    x = 10,928.80

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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.