Home / 13,885.32-19,161.38-7,916.86

Finding the Fourth Proportional to 13,885.32, 19,161.38 and 7,916.86

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Solution

The fourth proportional to 13,885.32, 19,161.38 and 7,916.86 is: 10,925.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.32 : 19,161.38 = 7,916.86 : x
  2. Step 2: Convert to fraction form
    13,885.32/19,161.38 = 7,916.86/x
  3. Step 3: Cross multiply
    13,885.32x = 19,161.38 × 7,916.86
  4. Step 4: Simplify right side
    13,885.32x = 151,697,854.30
  5. Step 5: Solve for x
    x = 151,697,854.30/13,885.32
  6. Step 6: Final answer
    x = 10,925.05

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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.