Home / 27,738.02-38,279.45-15,803.21

Finding the Fourth Proportional to 27,738.02, 38,279.45 and 15,803.21

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Solution

The fourth proportional to 27,738.02, 38,279.45 and 15,803.21 is: 21,808.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,738.02 : 38,279.45 = 15,803.21 : x
  2. Step 2: Convert to fraction form
    27,738.02/38,279.45 = 15,803.21/x
  3. Step 3: Cross multiply
    27,738.02x = 38,279.45 × 15,803.21
  4. Step 4: Simplify right side
    27,738.02x = 604,938,187.03
  5. Step 5: Solve for x
    x = 604,938,187.03/27,738.02
  6. Step 6: Final answer
    x = 21,808.99

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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.