Home / 30,109.30-41,557.80-20,038.18

Finding the Fourth Proportional to 30,109.30, 41,557.80 and 20,038.18

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Solution

The fourth proportional to 30,109.30, 41,557.80 and 20,038.18 is: 27,657.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109.30 : 41,557.80 = 20,038.18 : x
  2. Step 2: Convert to fraction form
    30,109.30/41,557.80 = 20,038.18/x
  3. Step 3: Cross multiply
    30,109.30x = 41,557.80 × 20,038.18
  4. Step 4: Simplify right side
    30,109.30x = 832,742,676.80
  5. Step 5: Solve for x
    x = 832,742,676.80/30,109.30
  6. Step 6: Final answer
    x = 27,657.32

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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.