Home / 39,289.18-54,217.41-21,384.22

Finding the Fourth Proportional to 39,289.18, 54,217.41 and 21,384.22

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Solution

The fourth proportional to 39,289.18, 54,217.41 and 21,384.22 is: 29,509.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,289.18 : 54,217.41 = 21,384.22 : x
  2. Step 2: Convert to fraction form
    39,289.18/54,217.41 = 21,384.22/x
  3. Step 3: Cross multiply
    39,289.18x = 54,217.41 × 21,384.22
  4. Step 4: Simplify right side
    39,289.18x = 1,159,397,023.27
  5. Step 5: Solve for x
    x = 1,159,397,023.27/39,289.18
  6. Step 6: Final answer
    x = 29,509.32

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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.