Home / 9,621.60-13,265.46-7,890.51

Finding the Fourth Proportional to 9,621.60, 13,265.46 and 7,890.51

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Solution

The fourth proportional to 9,621.60, 13,265.46 and 7,890.51 is: 10,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.60 : 13,265.46 = 7,890.51 : x
  2. Step 2: Convert to fraction form
    9,621.60/13,265.46 = 7,890.51/x
  3. Step 3: Cross multiply
    9,621.60x = 13,265.46 × 7,890.51
  4. Step 4: Simplify right side
    9,621.60x = 104,671,244.78
  5. Step 5: Solve for x
    x = 104,671,244.78/9,621.60
  6. Step 6: Final answer
    x = 10,878.78

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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.