Home / 39,718.02-54,810.51-21,813.30

Finding the Fourth Proportional to 39,718.02, 54,810.51 and 21,813.30

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Solution

The fourth proportional to 39,718.02, 54,810.51 and 21,813.30 is: 30,102.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.02 : 54,810.51 = 21,813.30 : x
  2. Step 2: Convert to fraction form
    39,718.02/54,810.51 = 21,813.30/x
  3. Step 3: Cross multiply
    39,718.02x = 54,810.51 × 21,813.30
  4. Step 4: Simplify right side
    39,718.02x = 1,195,598,097.78
  5. Step 5: Solve for x
    x = 1,195,598,097.78/39,718.02
  6. Step 6: Final answer
    x = 30,102.16

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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.