Home / 39,292.71-54,223.95-21,387.84

Finding the Fourth Proportional to 39,292.71, 54,223.95 and 21,387.84

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Solution

The fourth proportional to 39,292.71, 54,223.95 and 21,387.84 is: 29,515.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,292.71 : 54,223.95 = 21,387.84 : x
  2. Step 2: Convert to fraction form
    39,292.71/54,223.95 = 21,387.84/x
  3. Step 3: Cross multiply
    39,292.71x = 54,223.95 × 21,387.84
  4. Step 4: Simplify right side
    39,292.71x = 1,159,733,166.77
  5. Step 5: Solve for x
    x = 1,159,733,166.77/39,292.71
  6. Step 6: Final answer
    x = 29,515.22

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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.