Home / 28,971.63-43,457.45-18,648.99

Finding the Fourth Proportional to 28,971.63, 43,457.45 and 18,648.99

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Solution

The fourth proportional to 28,971.63, 43,457.45 and 18,648.99 is: 27,973.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.63 : 43,457.45 = 18,648.99 : x
  2. Step 2: Convert to fraction form
    28,971.63/43,457.45 = 18,648.99/x
  3. Step 3: Cross multiply
    28,971.63x = 43,457.45 × 18,648.99
  4. Step 4: Simplify right side
    28,971.63x = 810,437,457.23
  5. Step 5: Solve for x
    x = 810,437,457.23/28,971.63
  6. Step 6: Final answer
    x = 27,973.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.