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Finding the Fourth Proportional to 10,666.78, 16,000.16 and 2,875.58

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Solution

The fourth proportional to 10,666.78, 16,000.16 and 2,875.58 is: 4,313.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,666.78 : 16,000.16 = 2,875.58 : x
  2. Step 2: Convert to fraction form
    10,666.78/16,000.16 = 2,875.58/x
  3. Step 3: Cross multiply
    10,666.78x = 16,000.16 × 2,875.58
  4. Step 4: Simplify right side
    10,666.78x = 46,009,740.09
  5. Step 5: Solve for x
    x = 46,009,740.09/10,666.78
  6. Step 6: Final answer
    x = 4,313.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.