Home / 39,457.69-54,451.29-21,552.70

Finding the Fourth Proportional to 39,457.69, 54,451.29 and 21,552.70

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Solution

The fourth proportional to 39,457.69, 54,451.29 and 21,552.70 is: 29,742.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,457.69 : 54,451.29 = 21,552.70 : x
  2. Step 2: Convert to fraction form
    39,457.69/54,451.29 = 21,552.70/x
  3. Step 3: Cross multiply
    39,457.69x = 54,451.29 × 21,552.70
  4. Step 4: Simplify right side
    39,457.69x = 1,173,572,101.03
  5. Step 5: Solve for x
    x = 1,173,572,101.03/39,457.69
  6. Step 6: Final answer
    x = 29,742.55

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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.