Home / 10,800.64-14,904.32-6,816

Finding the Fourth Proportional to 10,800.64, 14,904.32 and 6,816

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Solution

The fourth proportional to 10,800.64, 14,904.32 and 6,816 is: 9,405.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,800.64 : 14,904.32 = 6,816 : x
  2. Step 2: Convert to fraction form
    10,800.64/14,904.32 = 6,816/x
  3. Step 3: Cross multiply
    10,800.64x = 14,904.32 × 6,816
  4. Step 4: Simplify right side
    10,800.64x = 101,587,845.12
  5. Step 5: Solve for x
    x = 101,587,845.12/10,800.64
  6. Step 6: Final answer
    x = 9,405.72

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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.