Home / 10,931.32-16,389.96-4,695.40

Finding the Fourth Proportional to 10,931.32, 16,389.96 and 4,695.40

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Solution

The fourth proportional to 10,931.32, 16,389.96 and 4,695.40 is: 7,040.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.32 : 16,389.96 = 4,695.40 : x
  2. Step 2: Convert to fraction form
    10,931.32/16,389.96 = 4,695.40/x
  3. Step 3: Cross multiply
    10,931.32x = 16,389.96 × 4,695.40
  4. Step 4: Simplify right side
    10,931.32x = 76,957,418.18
  5. Step 5: Solve for x
    x = 76,957,418.18/10,931.32
  6. Step 6: Final answer
    x = 7,040.08

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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.