Home / 28,663.88-42,994.86-13,081.40

Finding the Fourth Proportional to 28,663.88, 42,994.86 and 13,081.40

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Solution

The fourth proportional to 28,663.88, 42,994.86 and 13,081.40 is: 19,621.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.88 : 42,994.86 = 13,081.40 : x
  2. Step 2: Convert to fraction form
    28,663.88/42,994.86 = 13,081.40/x
  3. Step 3: Cross multiply
    28,663.88x = 42,994.86 × 13,081.40
  4. Step 4: Simplify right side
    28,663.88x = 562,432,961.60
  5. Step 5: Solve for x
    x = 562,432,961.60/28,663.88
  6. Step 6: Final answer
    x = 19,621.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.