Home / 28,085.54-38,757-15,510.02

Finding the Fourth Proportional to 28,085.54, 38,757 and 15,510.02

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Solution

The fourth proportional to 28,085.54, 38,757 and 15,510.02 is: 21,403.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.54 : 38,757 = 15,510.02 : x
  2. Step 2: Convert to fraction form
    28,085.54/38,757 = 15,510.02/x
  3. Step 3: Cross multiply
    28,085.54x = 38,757 × 15,510.02
  4. Step 4: Simplify right side
    28,085.54x = 601,121,845.14
  5. Step 5: Solve for x
    x = 601,121,845.14/28,085.54
  6. Step 6: Final answer
    x = 21,403.25

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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.