Home / 28,368.16-39,147.73-15,621.08

Finding the Fourth Proportional to 28,368.16, 39,147.73 and 15,621.08

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Solution

The fourth proportional to 28,368.16, 39,147.73 and 15,621.08 is: 21,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.16 : 39,147.73 = 15,621.08 : x
  2. Step 2: Convert to fraction form
    28,368.16/39,147.73 = 15,621.08/x
  3. Step 3: Cross multiply
    28,368.16x = 39,147.73 × 15,621.08
  4. Step 4: Simplify right side
    28,368.16x = 611,529,587.36
  5. Step 5: Solve for x
    x = 611,529,587.36/28,368.16
  6. Step 6: Final answer
    x = 21,556.90

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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.