Home / 38,918.54-58,386.02-12,621.23

Finding the Fourth Proportional to 38,918.54, 58,386.02 and 12,621.23

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Solution

The fourth proportional to 38,918.54, 58,386.02 and 12,621.23 is: 18,934.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,918.54 : 58,386.02 = 12,621.23 : x
  2. Step 2: Convert to fraction form
    38,918.54/58,386.02 = 12,621.23/x
  3. Step 3: Cross multiply
    38,918.54x = 58,386.02 × 12,621.23
  4. Step 4: Simplify right side
    38,918.54x = 736,903,579.54
  5. Step 5: Solve for x
    x = 736,903,579.54/38,918.54
  6. Step 6: Final answer
    x = 18,934.51

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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.