Home / 42,874.68-64,316.12-13,284.56

Finding the Fourth Proportional to 42,874.68, 64,316.12 and 13,284.56

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Solution

The fourth proportional to 42,874.68, 64,316.12 and 13,284.56 is: 19,928.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,874.68 : 64,316.12 = 13,284.56 : x
  2. Step 2: Convert to fraction form
    42,874.68/64,316.12 = 13,284.56/x
  3. Step 3: Cross multiply
    42,874.68x = 64,316.12 × 13,284.56
  4. Step 4: Simplify right side
    42,874.68x = 854,411,355.11
  5. Step 5: Solve for x
    x = 854,411,355.11/42,874.68
  6. Step 6: Final answer
    x = 19,928.11

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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.