Home / 39,044.45-53,881.27-21,139.45

Finding the Fourth Proportional to 39,044.45, 53,881.27 and 21,139.45

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Solution

The fourth proportional to 39,044.45, 53,881.27 and 21,139.45 is: 29,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,044.45 : 53,881.27 = 21,139.45 : x
  2. Step 2: Convert to fraction form
    39,044.45/53,881.27 = 21,139.45/x
  3. Step 3: Cross multiply
    39,044.45x = 53,881.27 × 21,139.45
  4. Step 4: Simplify right side
    39,044.45x = 1,139,020,225.55
  5. Step 5: Solve for x
    x = 1,139,020,225.55/39,044.45
  6. Step 6: Final answer
    x = 29,172.40

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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.