Home / 39,216.34-54,119.91-21,312.71

Finding the Fourth Proportional to 39,216.34, 54,119.91 and 21,312.71

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Solution

The fourth proportional to 39,216.34, 54,119.91 and 21,312.71 is: 29,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,216.34 : 54,119.91 = 21,312.71 : x
  2. Step 2: Convert to fraction form
    39,216.34/54,119.91 = 21,312.71/x
  3. Step 3: Cross multiply
    39,216.34x = 54,119.91 × 21,312.71
  4. Step 4: Simplify right side
    39,216.34x = 1,153,441,947.06
  5. Step 5: Solve for x
    x = 1,153,441,947.06/39,216.34
  6. Step 6: Final answer
    x = 29,412.28

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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.