Home / 42,511.36-63,766.48-19,121.28

Finding the Fourth Proportional to 42,511.36, 63,766.48 and 19,121.28

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Solution

The fourth proportional to 42,511.36, 63,766.48 and 19,121.28 is: 28,681.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,511.36 : 63,766.48 = 19,121.28 : x
  2. Step 2: Convert to fraction form
    42,511.36/63,766.48 = 19,121.28/x
  3. Step 3: Cross multiply
    42,511.36x = 63,766.48 × 19,121.28
  4. Step 4: Simplify right side
    42,511.36x = 1,219,296,718.69
  5. Step 5: Solve for x
    x = 1,219,296,718.69/42,511.36
  6. Step 6: Final answer
    x = 28,681.67

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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.