Home / 42,976.93-64,465.84-12,991.42

Finding the Fourth Proportional to 42,976.93, 64,465.84 and 12,991.42

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Solution

The fourth proportional to 42,976.93, 64,465.84 and 12,991.42 is: 19,487.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,976.93 : 64,465.84 = 12,991.42 : x
  2. Step 2: Convert to fraction form
    42,976.93/64,465.84 = 12,991.42/x
  3. Step 3: Cross multiply
    42,976.93x = 64,465.84 × 12,991.42
  4. Step 4: Simplify right side
    42,976.93x = 837,502,537.29
  5. Step 5: Solve for x
    x = 837,502,537.29/42,976.93
  6. Step 6: Final answer
    x = 19,487.26

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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.