Home / 28,996.47-40,013.78-16,421.31

Finding the Fourth Proportional to 28,996.47, 40,013.78 and 16,421.31

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Solution

The fourth proportional to 28,996.47, 40,013.78 and 16,421.31 is: 22,660.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,996.47 : 40,013.78 = 16,421.31 : x
  2. Step 2: Convert to fraction form
    28,996.47/40,013.78 = 16,421.31/x
  3. Step 3: Cross multiply
    28,996.47x = 40,013.78 × 16,421.31
  4. Step 4: Simplify right side
    28,996.47x = 657,078,526.64
  5. Step 5: Solve for x
    x = 657,078,526.64/28,996.47
  6. Step 6: Final answer
    x = 22,660.64

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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.