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Finding the Fourth Proportional to 19,779.22, 29,671.41 and 7,307.98

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Solution

The fourth proportional to 19,779.22, 29,671.41 and 7,307.98 is: 10,962.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.22 : 29,671.41 = 7,307.98 : x
  2. Step 2: Convert to fraction form
    19,779.22/29,671.41 = 7,307.98/x
  3. Step 3: Cross multiply
    19,779.22x = 29,671.41 × 7,307.98
  4. Step 4: Simplify right side
    19,779.22x = 216,838,070.85
  5. Step 5: Solve for x
    x = 216,838,070.85/19,779.22
  6. Step 6: Final answer
    x = 10,962.92

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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.