Home / 39,457.89-54,449.87-21,549.47

Finding the Fourth Proportional to 39,457.89, 54,449.87 and 21,549.47

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Solution

The fourth proportional to 39,457.89, 54,449.87 and 21,549.47 is: 29,737.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,457.89 : 54,449.87 = 21,549.47 : x
  2. Step 2: Convert to fraction form
    39,457.89/54,449.87 = 21,549.47/x
  3. Step 3: Cross multiply
    39,457.89x = 54,449.87 × 21,549.47
  4. Step 4: Simplify right side
    39,457.89x = 1,173,365,460.07
  5. Step 5: Solve for x
    x = 1,173,365,460.07/39,457.89
  6. Step 6: Final answer
    x = 29,737.16

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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.