Home / 29,208.39-40,307.60-15,779.64

Finding the Fourth Proportional to 29,208.39, 40,307.60 and 15,779.64

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Solution

The fourth proportional to 29,208.39, 40,307.60 and 15,779.64 is: 21,775.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,208.39 : 40,307.60 = 15,779.64 : x
  2. Step 2: Convert to fraction form
    29,208.39/40,307.60 = 15,779.64/x
  3. Step 3: Cross multiply
    29,208.39x = 40,307.60 × 15,779.64
  4. Step 4: Simplify right side
    29,208.39x = 636,039,338.37
  5. Step 5: Solve for x
    x = 636,039,338.37/29,208.39
  6. Step 6: Final answer
    x = 21,775.91

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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.