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Finding the Fourth Proportional to 17,776.55, 26,669.77 and 7,779.52

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Solution

The fourth proportional to 17,776.55, 26,669.77 and 7,779.52 is: 11,671.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,776.55 : 26,669.77 = 7,779.52 : x
  2. Step 2: Convert to fraction form
    17,776.55/26,669.77 = 7,779.52/x
  3. Step 3: Cross multiply
    17,776.55x = 26,669.77 × 7,779.52
  4. Step 4: Simplify right side
    17,776.55x = 207,477,875.76
  5. Step 5: Solve for x
    x = 207,477,875.76/17,776.55
  6. Step 6: Final answer
    x = 11,671.44

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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.