Home / 39,317.36-54,256.26-21,412.40

Finding the Fourth Proportional to 39,317.36, 54,256.26 and 21,412.40

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Solution

The fourth proportional to 39,317.36, 54,256.26 and 21,412.40 is: 29,548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,317.36 : 54,256.26 = 21,412.40 : x
  2. Step 2: Convert to fraction form
    39,317.36/54,256.26 = 21,412.40/x
  3. Step 3: Cross multiply
    39,317.36x = 54,256.26 × 21,412.40
  4. Step 4: Simplify right side
    39,317.36x = 1,161,756,877.26
  5. Step 5: Solve for x
    x = 1,161,756,877.26/39,317.36
  6. Step 6: Final answer
    x = 29,548.20

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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.