Home / 42,355.63-63,509.14-12,764.71

Finding the Fourth Proportional to 42,355.63, 63,509.14 and 12,764.71

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Solution

The fourth proportional to 42,355.63, 63,509.14 and 12,764.71 is: 19,139.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,355.63 : 63,509.14 = 12,764.71 : x
  2. Step 2: Convert to fraction form
    42,355.63/63,509.14 = 12,764.71/x
  3. Step 3: Cross multiply
    42,355.63x = 63,509.14 × 12,764.71
  4. Step 4: Simplify right side
    42,355.63x = 810,675,754.45
  5. Step 5: Solve for x
    x = 810,675,754.45/42,355.63
  6. Step 6: Final answer
    x = 19,139.74

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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.