Home / 42,788.66-64,189.94-13,199.63

Finding the Fourth Proportional to 42,788.66, 64,189.94 and 13,199.63

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Solution

The fourth proportional to 42,788.66, 64,189.94 and 13,199.63 is: 19,801.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,788.66 : 64,189.94 = 13,199.63 : x
  2. Step 2: Convert to fraction form
    42,788.66/64,189.94 = 13,199.63/x
  3. Step 3: Cross multiply
    42,788.66x = 64,189.94 × 13,199.63
  4. Step 4: Simplify right side
    42,788.66x = 847,283,070.77
  5. Step 5: Solve for x
    x = 847,283,070.77/42,788.66
  6. Step 6: Final answer
    x = 19,801.58

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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.