Home / 14,783.64-20,400.83-8,735.85

Finding the Fourth Proportional to 14,783.64, 20,400.83 and 8,735.85

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Solution

The fourth proportional to 14,783.64, 20,400.83 and 8,735.85 is: 12,055.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,783.64 : 20,400.83 = 8,735.85 : x
  2. Step 2: Convert to fraction form
    14,783.64/20,400.83 = 8,735.85/x
  3. Step 3: Cross multiply
    14,783.64x = 20,400.83 × 8,735.85
  4. Step 4: Simplify right side
    14,783.64x = 178,218,547.08
  5. Step 5: Solve for x
    x = 178,218,547.08/14,783.64
  6. Step 6: Final answer
    x = 12,055.12

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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.