Home / 28,977.02-39,985.60-16,401.78

Finding the Fourth Proportional to 28,977.02, 39,985.60 and 16,401.78

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Solution

The fourth proportional to 28,977.02, 39,985.60 and 16,401.78 is: 22,632.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977.02 : 39,985.60 = 16,401.78 : x
  2. Step 2: Convert to fraction form
    28,977.02/39,985.60 = 16,401.78/x
  3. Step 3: Cross multiply
    28,977.02x = 39,985.60 × 16,401.78
  4. Step 4: Simplify right side
    28,977.02x = 655,835,014.37
  5. Step 5: Solve for x
    x = 655,835,014.37/28,977.02
  6. Step 6: Final answer
    x = 22,632.94

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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.