Home / 28,995.63-40,013.99-16,420.38

Finding the Fourth Proportional to 28,995.63, 40,013.99 and 16,420.38

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Solution

The fourth proportional to 28,995.63, 40,013.99 and 16,420.38 is: 22,660.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995.63 : 40,013.99 = 16,420.38 : x
  2. Step 2: Convert to fraction form
    28,995.63/40,013.99 = 16,420.38/x
  3. Step 3: Cross multiply
    28,995.63x = 40,013.99 × 16,420.38
  4. Step 4: Simplify right side
    28,995.63x = 657,044,921.12
  5. Step 5: Solve for x
    x = 657,044,921.12/28,995.63
  6. Step 6: Final answer
    x = 22,660.14

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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.