Home / 27,895.03-38,495.14-15,319.78

Finding the Fourth Proportional to 27,895.03, 38,495.14 and 15,319.78

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Solution

The fourth proportional to 27,895.03, 38,495.14 and 15,319.78 is: 21,141.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,895.03 : 38,495.14 = 15,319.78 : x
  2. Step 2: Convert to fraction form
    27,895.03/38,495.14 = 15,319.78/x
  3. Step 3: Cross multiply
    27,895.03x = 38,495.14 × 15,319.78
  4. Step 4: Simplify right side
    27,895.03x = 589,737,075.87
  5. Step 5: Solve for x
    x = 589,737,075.87/27,895.03
  6. Step 6: Final answer
    x = 21,141.30

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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.