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Finding the Fourth Proportional to 10,653.93, 15,980.94 and 4,815.45

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Solution

The fourth proportional to 10,653.93, 15,980.94 and 4,815.45 is: 7,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,653.93 : 15,980.94 = 4,815.45 : x
  2. Step 2: Convert to fraction form
    10,653.93/15,980.94 = 4,815.45/x
  3. Step 3: Cross multiply
    10,653.93x = 15,980.94 × 4,815.45
  4. Step 4: Simplify right side
    10,653.93x = 76,955,417.52
  5. Step 5: Solve for x
    x = 76,955,417.52/10,653.93
  6. Step 6: Final answer
    x = 7,223.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.