Home / 15,071.09-20,803.49-10,287.61

Finding the Fourth Proportional to 15,071.09, 20,803.49 and 10,287.61

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Solution

The fourth proportional to 15,071.09, 20,803.49 and 10,287.61 is: 14,200.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.09 : 20,803.49 = 10,287.61 : x
  2. Step 2: Convert to fraction form
    15,071.09/20,803.49 = 10,287.61/x
  3. Step 3: Cross multiply
    15,071.09x = 20,803.49 × 10,287.61
  4. Step 4: Simplify right side
    15,071.09x = 214,018,126.89
  5. Step 5: Solve for x
    x = 214,018,126.89/15,071.09
  6. Step 6: Final answer
    x = 14,200.58

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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.