Home / 42,804.39-64,206.41-11,639.55

Finding the Fourth Proportional to 42,804.39, 64,206.41 and 11,639.55

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Solution

The fourth proportional to 42,804.39, 64,206.41 and 11,639.55 is: 17,459.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,804.39 : 64,206.41 = 11,639.55 : x
  2. Step 2: Convert to fraction form
    42,804.39/64,206.41 = 11,639.55/x
  3. Step 3: Cross multiply
    42,804.39x = 64,206.41 × 11,639.55
  4. Step 4: Simplify right side
    42,804.39x = 747,333,661.32
  5. Step 5: Solve for x
    x = 747,333,661.32/42,804.39
  6. Step 6: Final answer
    x = 17,459.28

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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.