Home / 28,115.03-38,798.90-15,368.24

Finding the Fourth Proportional to 28,115.03, 38,798.90 and 15,368.24

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Solution

The fourth proportional to 28,115.03, 38,798.90 and 15,368.24 is: 21,208.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.03 : 38,798.90 = 15,368.24 : x
  2. Step 2: Convert to fraction form
    28,115.03/38,798.90 = 15,368.24/x
  3. Step 3: Cross multiply
    28,115.03x = 38,798.90 × 15,368.24
  4. Step 4: Simplify right side
    28,115.03x = 596,270,536.10
  5. Step 5: Solve for x
    x = 596,270,536.10/28,115.03
  6. Step 6: Final answer
    x = 21,208.25

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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.