Home / 15,819.19-21,830.93-8,746.07

Finding the Fourth Proportional to 15,819.19, 21,830.93 and 8,746.07

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Solution

The fourth proportional to 15,819.19, 21,830.93 and 8,746.07 is: 12,069.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.19 : 21,830.93 = 8,746.07 : x
  2. Step 2: Convert to fraction form
    15,819.19/21,830.93 = 8,746.07/x
  3. Step 3: Cross multiply
    15,819.19x = 21,830.93 × 8,746.07
  4. Step 4: Simplify right side
    15,819.19x = 190,934,771.05
  5. Step 5: Solve for x
    x = 190,934,771.05/15,819.19
  6. Step 6: Final answer
    x = 12,069.82

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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.