Home / 11,783.18-16,260.80-6,478.00

Finding the Fourth Proportional to 11,783.18, 16,260.80 and 6,478.00

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Solution

The fourth proportional to 11,783.18, 16,260.80 and 6,478.00 is: 8,939.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,783.18 : 16,260.80 = 6,478.00 : x
  2. Step 2: Convert to fraction form
    11,783.18/16,260.80 = 6,478.00/x
  3. Step 3: Cross multiply
    11,783.18x = 16,260.80 × 6,478.00
  4. Step 4: Simplify right side
    11,783.18x = 105,337,389.36
  5. Step 5: Solve for x
    x = 105,337,389.36/11,783.18
  6. Step 6: Final answer
    x = 8,939.64

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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.