Home / 39,987.06-59,980.56-11,907.51

Finding the Fourth Proportional to 39,987.06, 59,980.56 and 11,907.51

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Solution

The fourth proportional to 39,987.06, 59,980.56 and 11,907.51 is: 17,861.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,987.06 : 59,980.56 = 11,907.51 : x
  2. Step 2: Convert to fraction form
    39,987.06/59,980.56 = 11,907.51/x
  3. Step 3: Cross multiply
    39,987.06x = 59,980.56 × 11,907.51
  4. Step 4: Simplify right side
    39,987.06x = 714,219,118.01
  5. Step 5: Solve for x
    x = 714,219,118.01/39,987.06
  6. Step 6: Final answer
    x = 17,861.26

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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.