Home / 39,888.96-55,049.93-21,987.15

Finding the Fourth Proportional to 39,888.96, 55,049.93 and 21,987.15

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Solution

The fourth proportional to 39,888.96, 55,049.93 and 21,987.15 is: 30,344.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.96 : 55,049.93 = 21,987.15 : x
  2. Step 2: Convert to fraction form
    39,888.96/55,049.93 = 21,987.15/x
  3. Step 3: Cross multiply
    39,888.96x = 55,049.93 × 21,987.15
  4. Step 4: Simplify right side
    39,888.96x = 1,210,390,834.48
  5. Step 5: Solve for x
    x = 1,210,390,834.48/39,888.96
  6. Step 6: Final answer
    x = 30,344.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.