Home / 28,149.48-38,845.99-15,574.32

Finding the Fourth Proportional to 28,149.48, 38,845.99 and 15,574.32

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Solution

The fourth proportional to 28,149.48, 38,845.99 and 15,574.32 is: 21,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.48 : 38,845.99 = 15,574.32 : x
  2. Step 2: Convert to fraction form
    28,149.48/38,845.99 = 15,574.32/x
  3. Step 3: Cross multiply
    28,149.48x = 38,845.99 × 15,574.32
  4. Step 4: Simplify right side
    28,149.48x = 604,999,878.98
  5. Step 5: Solve for x
    x = 604,999,878.98/28,149.48
  6. Step 6: Final answer
    x = 21,492.40

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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.