Home / 39,217.98-54,119.36-21,312.58

Finding the Fourth Proportional to 39,217.98, 54,119.36 and 21,312.58

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Solution

The fourth proportional to 39,217.98, 54,119.36 and 21,312.58 is: 29,410.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,217.98 : 54,119.36 = 21,312.58 : x
  2. Step 2: Convert to fraction form
    39,217.98/54,119.36 = 21,312.58/x
  3. Step 3: Cross multiply
    39,217.98x = 54,119.36 × 21,312.58
  4. Step 4: Simplify right side
    39,217.98x = 1,153,423,189.55
  5. Step 5: Solve for x
    x = 1,153,423,189.55/39,217.98
  6. Step 6: Final answer
    x = 29,410.57

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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.