Home / 15,809.60-21,818.34-8,735.87

Finding the Fourth Proportional to 15,809.60, 21,818.34 and 8,735.87

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Solution

The fourth proportional to 15,809.60, 21,818.34 and 8,735.87 is: 12,056.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,809.60 : 21,818.34 = 8,735.87 : x
  2. Step 2: Convert to fraction form
    15,809.60/21,818.34 = 8,735.87/x
  3. Step 3: Cross multiply
    15,809.60x = 21,818.34 × 8,735.87
  4. Step 4: Simplify right side
    15,809.60x = 190,602,072.76
  5. Step 5: Solve for x
    x = 190,602,072.76/15,809.60
  6. Step 6: Final answer
    x = 12,056.10

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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.