Home / 9,931.43-13,705.53-5,455.60

Finding the Fourth Proportional to 9,931.43, 13,705.53 and 5,455.60

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Solution

The fourth proportional to 9,931.43, 13,705.53 and 5,455.60 is: 7,528.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,931.43 : 13,705.53 = 5,455.60 : x
  2. Step 2: Convert to fraction form
    9,931.43/13,705.53 = 5,455.60/x
  3. Step 3: Cross multiply
    9,931.43x = 13,705.53 × 5,455.60
  4. Step 4: Simplify right side
    9,931.43x = 74,771,889.47
  5. Step 5: Solve for x
    x = 74,771,889.47/9,931.43
  6. Step 6: Final answer
    x = 7,528.81

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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.