Home / 28,485.48-39,312.72-15,741.66

Finding the Fourth Proportional to 28,485.48, 39,312.72 and 15,741.66

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Solution

The fourth proportional to 28,485.48, 39,312.72 and 15,741.66 is: 21,725.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485.48 : 39,312.72 = 15,741.66 : x
  2. Step 2: Convert to fraction form
    28,485.48/39,312.72 = 15,741.66/x
  3. Step 3: Cross multiply
    28,485.48x = 39,312.72 × 15,741.66
  4. Step 4: Simplify right side
    28,485.48x = 618,847,471.92
  5. Step 5: Solve for x
    x = 618,847,471.92/28,485.48
  6. Step 6: Final answer
    x = 21,725.01

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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.