Home / 42,428.37-63,642.57-12,846.15

Finding the Fourth Proportional to 42,428.37, 63,642.57 and 12,846.15

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Solution

The fourth proportional to 42,428.37, 63,642.57 and 12,846.15 is: 19,269.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,428.37 : 63,642.57 = 12,846.15 : x
  2. Step 2: Convert to fraction form
    42,428.37/63,642.57 = 12,846.15/x
  3. Step 3: Cross multiply
    42,428.37x = 63,642.57 × 12,846.15
  4. Step 4: Simplify right side
    42,428.37x = 817,562,000.61
  5. Step 5: Solve for x
    x = 817,562,000.61/42,428.37
  6. Step 6: Final answer
    x = 19,269.23

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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.