Home / 39,307.58-54,243.23-21,402.47

Finding the Fourth Proportional to 39,307.58, 54,243.23 and 21,402.47

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Solution

The fourth proportional to 39,307.58, 54,243.23 and 21,402.47 is: 29,534.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,307.58 : 54,243.23 = 21,402.47 : x
  2. Step 2: Convert to fraction form
    39,307.58/54,243.23 = 21,402.47/x
  3. Step 3: Cross multiply
    39,307.58x = 54,243.23 × 21,402.47
  4. Step 4: Simplify right side
    39,307.58x = 1,160,938,724.55
  5. Step 5: Solve for x
    x = 1,160,938,724.55/39,307.58
  6. Step 6: Final answer
    x = 29,534.73

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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.