Home / 39,307.50-54,245.32-21,403.48

Finding the Fourth Proportional to 39,307.50, 54,245.32 and 21,403.48

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Solution

The fourth proportional to 39,307.50, 54,245.32 and 21,403.48 is: 29,537.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,307.50 : 54,245.32 = 21,403.48 : x
  2. Step 2: Convert to fraction form
    39,307.50/54,245.32 = 21,403.48/x
  3. Step 3: Cross multiply
    39,307.50x = 54,245.32 × 21,403.48
  4. Step 4: Simplify right side
    39,307.50x = 1,161,038,621.71
  5. Step 5: Solve for x
    x = 1,161,038,621.71/39,307.50
  6. Step 6: Final answer
    x = 29,537.33

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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.