Home / 39,124.32-53,991.63-21,219.34

Finding the Fourth Proportional to 39,124.32, 53,991.63 and 21,219.34

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Solution

The fourth proportional to 39,124.32, 53,991.63 and 21,219.34 is: 29,282.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,124.32 : 53,991.63 = 21,219.34 : x
  2. Step 2: Convert to fraction form
    39,124.32/53,991.63 = 21,219.34/x
  3. Step 3: Cross multiply
    39,124.32x = 53,991.63 × 21,219.34
  4. Step 4: Simplify right side
    39,124.32x = 1,145,666,812.55
  5. Step 5: Solve for x
    x = 1,145,666,812.55/39,124.32
  6. Step 6: Final answer
    x = 29,282.73

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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.