Home / 9,931.80-13,705.22-5,455.74

Finding the Fourth Proportional to 9,931.80, 13,705.22 and 5,455.74

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Solution

The fourth proportional to 9,931.80, 13,705.22 and 5,455.74 is: 7,528.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,931.80 : 13,705.22 = 5,455.74 : x
  2. Step 2: Convert to fraction form
    9,931.80/13,705.22 = 5,455.74/x
  3. Step 3: Cross multiply
    9,931.80x = 13,705.22 × 5,455.74
  4. Step 4: Simplify right side
    9,931.80x = 74,772,123.95
  5. Step 5: Solve for x
    x = 74,772,123.95/9,931.80
  6. Step 6: Final answer
    x = 7,528.56

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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.