Home / 12,890.36-19,332.75-4,570.65

Finding the Fourth Proportional to 12,890.36, 19,332.75 and 4,570.65

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Solution

The fourth proportional to 12,890.36, 19,332.75 and 4,570.65 is: 6,854.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.36 : 19,332.75 = 4,570.65 : x
  2. Step 2: Convert to fraction form
    12,890.36/19,332.75 = 4,570.65/x
  3. Step 3: Cross multiply
    12,890.36x = 19,332.75 × 4,570.65
  4. Step 4: Simplify right side
    12,890.36x = 88,363,137.12
  5. Step 5: Solve for x
    x = 88,363,137.12/12,890.36
  6. Step 6: Final answer
    x = 6,854.98

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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.