Home / 27,888.08-38,485.80-15,312.92

Finding the Fourth Proportional to 27,888.08, 38,485.80 and 15,312.92

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Solution

The fourth proportional to 27,888.08, 38,485.80 and 15,312.92 is: 21,131.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,888.08 : 38,485.80 = 15,312.92 : x
  2. Step 2: Convert to fraction form
    27,888.08/38,485.80 = 15,312.92/x
  3. Step 3: Cross multiply
    27,888.08x = 38,485.80 × 15,312.92
  4. Step 4: Simplify right side
    27,888.08x = 589,329,976.54
  5. Step 5: Solve for x
    x = 589,329,976.54/27,888.08
  6. Step 6: Final answer
    x = 21,131.97

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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.