Home / 27,991.04-38,628-15,416.72

Finding the Fourth Proportional to 27,991.04, 38,628 and 15,416.72

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Solution

The fourth proportional to 27,991.04, 38,628 and 15,416.72 is: 21,275.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.04 : 38,628 = 15,416.72 : x
  2. Step 2: Convert to fraction form
    27,991.04/38,628 = 15,416.72/x
  3. Step 3: Cross multiply
    27,991.04x = 38,628 × 15,416.72
  4. Step 4: Simplify right side
    27,991.04x = 595,517,060.16
  5. Step 5: Solve for x
    x = 595,517,060.16/27,991.04
  6. Step 6: Final answer
    x = 21,275.27

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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.