Home / 42,783.39-64,174.95-11,618.64

Finding the Fourth Proportional to 42,783.39, 64,174.95 and 11,618.64

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Solution

The fourth proportional to 42,783.39, 64,174.95 and 11,618.64 is: 17,427.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,783.39 : 64,174.95 = 11,618.64 : x
  2. Step 2: Convert to fraction form
    42,783.39/64,174.95 = 11,618.64/x
  3. Step 3: Cross multiply
    42,783.39x = 64,174.95 × 11,618.64
  4. Step 4: Simplify right side
    42,783.39x = 745,625,641.07
  5. Step 5: Solve for x
    x = 745,625,641.07/42,783.39
  6. Step 6: Final answer
    x = 17,427.92

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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.