Home / 39,895.50-55,055.56-21,746.20

Finding the Fourth Proportional to 39,895.50, 55,055.56 and 21,746.20

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Solution

The fourth proportional to 39,895.50, 55,055.56 and 21,746.20 is: 30,009.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,895.50 : 55,055.56 = 21,746.20 : x
  2. Step 2: Convert to fraction form
    39,895.50/55,055.56 = 21,746.20/x
  3. Step 3: Cross multiply
    39,895.50x = 55,055.56 × 21,746.20
  4. Step 4: Simplify right side
    39,895.50x = 1,197,249,218.87
  5. Step 5: Solve for x
    x = 1,197,249,218.87/39,895.50
  6. Step 6: Final answer
    x = 30,009.63

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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.