Home / 39,217.40-54,119.96-21,312.36

Finding the Fourth Proportional to 39,217.40, 54,119.96 and 21,312.36

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Solution

The fourth proportional to 39,217.40, 54,119.96 and 21,312.36 is: 29,411.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,217.40 : 54,119.96 = 21,312.36 : x
  2. Step 2: Convert to fraction form
    39,217.40/54,119.96 = 21,312.36/x
  3. Step 3: Cross multiply
    39,217.40x = 54,119.96 × 21,312.36
  4. Step 4: Simplify right side
    39,217.40x = 1,153,423,964.14
  5. Step 5: Solve for x
    x = 1,153,423,964.14/39,217.40
  6. Step 6: Final answer
    x = 29,411.03

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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.