Home / 10,120.66-13,973.40-6,345.40

Finding the Fourth Proportional to 10,120.66, 13,973.40 and 6,345.40

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Solution

The fourth proportional to 10,120.66, 13,973.40 and 6,345.40 is: 8,760.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.66 : 13,973.40 = 6,345.40 : x
  2. Step 2: Convert to fraction form
    10,120.66/13,973.40 = 6,345.40/x
  3. Step 3: Cross multiply
    10,120.66x = 13,973.40 × 6,345.40
  4. Step 4: Simplify right side
    10,120.66x = 88,666,812.36
  5. Step 5: Solve for x
    x = 88,666,812.36/10,120.66
  6. Step 6: Final answer
    x = 8,760.97

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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.