Home / 28,909.10-39,879.95-19,349.39

Finding the Fourth Proportional to 28,909.10, 39,879.95 and 19,349.39

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Solution

The fourth proportional to 28,909.10, 39,879.95 and 19,349.39 is: 26,692.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.10 : 39,879.95 = 19,349.39 : x
  2. Step 2: Convert to fraction form
    28,909.10/39,879.95 = 19,349.39/x
  3. Step 3: Cross multiply
    28,909.10x = 39,879.95 × 19,349.39
  4. Step 4: Simplify right side
    28,909.10x = 771,652,509.28
  5. Step 5: Solve for x
    x = 771,652,509.28/28,909.10
  6. Step 6: Final answer
    x = 26,692.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.