Home / 28,138.26-38,830.95-15,563.01

Finding the Fourth Proportional to 28,138.26, 38,830.95 and 15,563.01

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Solution

The fourth proportional to 28,138.26, 38,830.95 and 15,563.01 is: 21,477.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.26 : 38,830.95 = 15,563.01 : x
  2. Step 2: Convert to fraction form
    28,138.26/38,830.95 = 15,563.01/x
  3. Step 3: Cross multiply
    28,138.26x = 38,830.95 × 15,563.01
  4. Step 4: Simplify right side
    28,138.26x = 604,326,463.16
  5. Step 5: Solve for x
    x = 604,326,463.16/28,138.26
  6. Step 6: Final answer
    x = 21,477.04

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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.