Home / 39,289.47-54,219.47-21,384.61

Finding the Fourth Proportional to 39,289.47, 54,219.47 and 21,384.61

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Solution

The fourth proportional to 39,289.47, 54,219.47 and 21,384.61 is: 29,510.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,289.47 : 54,219.47 = 21,384.61 : x
  2. Step 2: Convert to fraction form
    39,289.47/54,219.47 = 21,384.61/x
  3. Step 3: Cross multiply
    39,289.47x = 54,219.47 × 21,384.61
  4. Step 4: Simplify right side
    39,289.47x = 1,159,462,220.36
  5. Step 5: Solve for x
    x = 1,159,462,220.36/39,289.47
  6. Step 6: Final answer
    x = 29,510.76

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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.