Home / 14,577.84-20,130.12-11,428.56

Finding the Fourth Proportional to 14,577.84, 20,130.12 and 11,428.56

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Solution

The fourth proportional to 14,577.84, 20,130.12 and 11,428.56 is: 15,781.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,577.84 : 20,130.12 = 11,428.56 : x
  2. Step 2: Convert to fraction form
    14,577.84/20,130.12 = 11,428.56/x
  3. Step 3: Cross multiply
    14,577.84x = 20,130.12 × 11,428.56
  4. Step 4: Simplify right side
    14,577.84x = 230,058,284.23
  5. Step 5: Solve for x
    x = 230,058,284.23/14,577.84
  6. Step 6: Final answer
    x = 15,781.37

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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.