Home / 13,865.64-19,132.96-7,814.72

Finding the Fourth Proportional to 13,865.64, 19,132.96 and 7,814.72

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Solution

The fourth proportional to 13,865.64, 19,132.96 and 7,814.72 is: 10,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.64 : 19,132.96 = 7,814.72 : x
  2. Step 2: Convert to fraction form
    13,865.64/19,132.96 = 7,814.72/x
  3. Step 3: Cross multiply
    13,865.64x = 19,132.96 × 7,814.72
  4. Step 4: Simplify right side
    13,865.64x = 149,518,725.17
  5. Step 5: Solve for x
    x = 149,518,725.17/13,865.64
  6. Step 6: Final answer
    x = 10,783.40

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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.