Home / 28,216.56-38,918.16-20,266.95

Finding the Fourth Proportional to 28,216.56, 38,918.16 and 20,266.95

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Solution

The fourth proportional to 28,216.56, 38,918.16 and 20,266.95 is: 27,953.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.56 : 38,918.16 = 20,266.95 : x
  2. Step 2: Convert to fraction form
    28,216.56/38,918.16 = 20,266.95/x
  3. Step 3: Cross multiply
    28,216.56x = 38,918.16 × 20,266.95
  4. Step 4: Simplify right side
    28,216.56x = 788,752,402.81
  5. Step 5: Solve for x
    x = 788,752,402.81/28,216.56
  6. Step 6: Final answer
    x = 27,953.53

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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.