Home / 30,645.24-42,308.16-20,053.35

Finding the Fourth Proportional to 30,645.24, 42,308.16 and 20,053.35

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Solution

The fourth proportional to 30,645.24, 42,308.16 and 20,053.35 is: 27,685.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.24 : 42,308.16 = 20,053.35 : x
  2. Step 2: Convert to fraction form
    30,645.24/42,308.16 = 20,053.35/x
  3. Step 3: Cross multiply
    30,645.24x = 42,308.16 × 20,053.35
  4. Step 4: Simplify right side
    30,645.24x = 848,420,340.34
  5. Step 5: Solve for x
    x = 848,420,340.34/30,645.24
  6. Step 6: Final answer
    x = 27,685.22

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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.