Home / 28,356.41-42,534.63-12,755.81

Finding the Fourth Proportional to 28,356.41, 42,534.63 and 12,755.81

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Solution

The fourth proportional to 28,356.41, 42,534.63 and 12,755.81 is: 19,133.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.41 : 42,534.63 = 12,755.81 : x
  2. Step 2: Convert to fraction form
    28,356.41/42,534.63 = 12,755.81/x
  3. Step 3: Cross multiply
    28,356.41x = 42,534.63 × 12,755.81
  4. Step 4: Simplify right side
    28,356.41x = 542,563,658.70
  5. Step 5: Solve for x
    x = 542,563,658.70/28,356.41
  6. Step 6: Final answer
    x = 19,133.72

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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.