Home / 28,137.66-38,810.79-18,061.98

Finding the Fourth Proportional to 28,137.66, 38,810.79 and 18,061.98

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Solution

The fourth proportional to 28,137.66, 38,810.79 and 18,061.98 is: 24,913.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.66 : 38,810.79 = 18,061.98 : x
  2. Step 2: Convert to fraction form
    28,137.66/38,810.79 = 18,061.98/x
  3. Step 3: Cross multiply
    28,137.66x = 38,810.79 × 18,061.98
  4. Step 4: Simplify right side
    28,137.66x = 700,999,712.76
  5. Step 5: Solve for x
    x = 700,999,712.76/28,137.66
  6. Step 6: Final answer
    x = 24,913.22

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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.