Home / 42,970.35-64,448.09-11,798.31

Finding the Fourth Proportional to 42,970.35, 64,448.09 and 11,798.31

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Solution

The fourth proportional to 42,970.35, 64,448.09 and 11,798.31 is: 17,695.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,970.35 : 64,448.09 = 11,798.31 : x
  2. Step 2: Convert to fraction form
    42,970.35/64,448.09 = 11,798.31/x
  3. Step 3: Cross multiply
    42,970.35x = 64,448.09 × 11,798.31
  4. Step 4: Simplify right side
    42,970.35x = 760,378,485.74
  5. Step 5: Solve for x
    x = 760,378,485.74/42,970.35
  6. Step 6: Final answer
    x = 17,695.42

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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.