Home / 39,889.02-55,048.01-21,985.19

Finding the Fourth Proportional to 39,889.02, 55,048.01 and 21,985.19

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Solution

The fourth proportional to 39,889.02, 55,048.01 and 21,985.19 is: 30,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,889.02 : 55,048.01 = 21,985.19 : x
  2. Step 2: Convert to fraction form
    39,889.02/55,048.01 = 21,985.19/x
  3. Step 3: Cross multiply
    39,889.02x = 55,048.01 × 21,985.19
  4. Step 4: Simplify right side
    39,889.02x = 1,210,240,573.81
  5. Step 5: Solve for x
    x = 1,210,240,573.81/39,889.02
  6. Step 6: Final answer
    x = 30,340.19

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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.