Home / 10,890.94-15,032.58-6,417.28

Finding the Fourth Proportional to 10,890.94, 15,032.58 and 6,417.28

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Solution

The fourth proportional to 10,890.94, 15,032.58 and 6,417.28 is: 8,857.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.94 : 15,032.58 = 6,417.28 : x
  2. Step 2: Convert to fraction form
    10,890.94/15,032.58 = 6,417.28/x
  3. Step 3: Cross multiply
    10,890.94x = 15,032.58 × 6,417.28
  4. Step 4: Simplify right side
    10,890.94x = 96,468,274.98
  5. Step 5: Solve for x
    x = 96,468,274.98/10,890.94
  6. Step 6: Final answer
    x = 8,857.66

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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.