Home / 28,119.41-38,803.59-15,372.36

Finding the Fourth Proportional to 28,119.41, 38,803.59 and 15,372.36

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Solution

The fourth proportional to 28,119.41, 38,803.59 and 15,372.36 is: 21,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.41 : 38,803.59 = 15,372.36 : x
  2. Step 2: Convert to fraction form
    28,119.41/38,803.59 = 15,372.36/x
  3. Step 3: Cross multiply
    28,119.41x = 38,803.59 × 15,372.36
  4. Step 4: Simplify right side
    28,119.41x = 596,502,754.77
  5. Step 5: Solve for x
    x = 596,502,754.77/28,119.41
  6. Step 6: Final answer
    x = 21,213.20

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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.