Home / 21,386.36-32,068.71-10,138.30

Finding the Fourth Proportional to 21,386.36, 32,068.71 and 10,138.30

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Solution

The fourth proportional to 21,386.36, 32,068.71 and 10,138.30 is: 15,202.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,386.36 : 32,068.71 = 10,138.30 : x
  2. Step 2: Convert to fraction form
    21,386.36/32,068.71 = 10,138.30/x
  3. Step 3: Cross multiply
    21,386.36x = 32,068.71 × 10,138.30
  4. Step 4: Simplify right side
    21,386.36x = 325,122,122.42
  5. Step 5: Solve for x
    x = 325,122,122.42/21,386.36
  6. Step 6: Final answer
    x = 15,202.31

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1.5x scale

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.