Home / 42,776.93-64,143.99-13,190.93

Finding the Fourth Proportional to 42,776.93, 64,143.99 and 13,190.93

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Solution

The fourth proportional to 42,776.93, 64,143.99 and 13,190.93 is: 19,779.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,776.93 : 64,143.99 = 13,190.93 : x
  2. Step 2: Convert to fraction form
    42,776.93/64,143.99 = 13,190.93/x
  3. Step 3: Cross multiply
    42,776.93x = 64,143.99 × 13,190.93
  4. Step 4: Simplify right side
    42,776.93x = 846,118,511.82
  5. Step 5: Solve for x
    x = 846,118,511.82/42,776.93
  6. Step 6: Final answer
    x = 19,779.78

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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.