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Finding the Fourth Proportional to 42,873.84, 64,325.88 and 13,299.12

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Solution

The fourth proportional to 42,873.84, 64,325.88 and 13,299.12 is: 19,953.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,873.84 : 64,325.88 = 13,299.12 : x
  2. Step 2: Convert to fraction form
    42,873.84/64,325.88 = 13,299.12/x
  3. Step 3: Cross multiply
    42,873.84x = 64,325.88 × 13,299.12
  4. Step 4: Simplify right side
    42,873.84x = 855,477,597.23
  5. Step 5: Solve for x
    x = 855,477,597.23/42,873.84
  6. Step 6: Final answer
    x = 19,953.37

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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.