Home / 28,485.01-39,307.30-15,738.06

Finding the Fourth Proportional to 28,485.01, 39,307.30 and 15,738.06

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Solution

The fourth proportional to 28,485.01, 39,307.30 and 15,738.06 is: 21,717.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485.01 : 39,307.30 = 15,738.06 : x
  2. Step 2: Convert to fraction form
    28,485.01/39,307.30 = 15,738.06/x
  3. Step 3: Cross multiply
    28,485.01x = 39,307.30 × 15,738.06
  4. Step 4: Simplify right side
    28,485.01x = 618,620,567.15
  5. Step 5: Solve for x
    x = 618,620,567.15/28,485.01
  6. Step 6: Final answer
    x = 21,717.41

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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.