Home / 30,577.07-42,157.30-19,802.91

Finding the Fourth Proportional to 30,577.07, 42,157.30 and 19,802.91

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Solution

The fourth proportional to 30,577.07, 42,157.30 and 19,802.91 is: 27,302.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,577.07 : 42,157.30 = 19,802.91 : x
  2. Step 2: Convert to fraction form
    30,577.07/42,157.30 = 19,802.91/x
  3. Step 3: Cross multiply
    30,577.07x = 42,157.30 × 19,802.91
  4. Step 4: Simplify right side
    30,577.07x = 834,837,168.24
  5. Step 5: Solve for x
    x = 834,837,168.24/30,577.07
  6. Step 6: Final answer
    x = 27,302.72

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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.