Home / 19,929.10-29,879.67-8,829.76

Finding the Fourth Proportional to 19,929.10, 29,879.67 and 8,829.76

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Solution

The fourth proportional to 19,929.10, 29,879.67 and 8,829.76 is: 13,238.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.10 : 29,879.67 = 8,829.76 : x
  2. Step 2: Convert to fraction form
    19,929.10/29,879.67 = 8,829.76/x
  3. Step 3: Cross multiply
    19,929.10x = 29,879.67 × 8,829.76
  4. Step 4: Simplify right side
    19,929.10x = 263,830,314.98
  5. Step 5: Solve for x
    x = 263,830,314.98/19,929.10
  6. Step 6: Final answer
    x = 13,238.45

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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.