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Finding the Fourth Proportional to 10,368.99, 15,551.04 and 7,081.20

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Solution

The fourth proportional to 10,368.99, 15,551.04 and 7,081.20 is: 10,620.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,368.99 : 15,551.04 = 7,081.20 : x
  2. Step 2: Convert to fraction form
    10,368.99/15,551.04 = 7,081.20/x
  3. Step 3: Cross multiply
    10,368.99x = 15,551.04 × 7,081.20
  4. Step 4: Simplify right side
    10,368.99x = 110,120,024.45
  5. Step 5: Solve for x
    x = 110,120,024.45/10,368.99
  6. Step 6: Final answer
    x = 10,620.13

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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.