Home / 27,887.63-38,485.83-15,312.38

Finding the Fourth Proportional to 27,887.63, 38,485.83 and 15,312.38

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Solution

The fourth proportional to 27,887.63, 38,485.83 and 15,312.38 is: 21,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,887.63 : 38,485.83 = 15,312.38 : x
  2. Step 2: Convert to fraction form
    27,887.63/38,485.83 = 15,312.38/x
  3. Step 3: Cross multiply
    27,887.63x = 38,485.83 × 15,312.38
  4. Step 4: Simplify right side
    27,887.63x = 589,309,518.57
  5. Step 5: Solve for x
    x = 589,309,518.57/27,887.63
  6. Step 6: Final answer
    x = 21,131.58

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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.