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Finding the Fourth Proportional to 10,900.77, 15,047.64 and 7,368.77

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Solution

The fourth proportional to 10,900.77, 15,047.64 and 7,368.77 is: 10,172.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.77 : 15,047.64 = 7,368.77 : x
  2. Step 2: Convert to fraction form
    10,900.77/15,047.64 = 7,368.77/x
  3. Step 3: Cross multiply
    10,900.77x = 15,047.64 × 7,368.77
  4. Step 4: Simplify right side
    10,900.77x = 110,882,598.20
  5. Step 5: Solve for x
    x = 110,882,598.20/10,900.77
  6. Step 6: Final answer
    x = 10,172.00

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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.