Home / 28,920.90-43,352.55-13,311.30

Finding the Fourth Proportional to 28,920.90, 43,352.55 and 13,311.30

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Solution

The fourth proportional to 28,920.90, 43,352.55 and 13,311.30 is: 19,953.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.90 : 43,352.55 = 13,311.30 : x
  2. Step 2: Convert to fraction form
    28,920.90/43,352.55 = 13,311.30/x
  3. Step 3: Cross multiply
    28,920.90x = 43,352.55 × 13,311.30
  4. Step 4: Simplify right side
    28,920.90x = 577,078,798.82
  5. Step 5: Solve for x
    x = 577,078,798.82/28,920.90
  6. Step 6: Final answer
    x = 19,953.69

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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.