Home / 35,985.09-53,981.49-9,690.21

Finding the Fourth Proportional to 35,985.09, 53,981.49 and 9,690.21

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Solution

The fourth proportional to 35,985.09, 53,981.49 and 9,690.21 is: 14,536.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,985.09 : 53,981.49 = 9,690.21 : x
  2. Step 2: Convert to fraction form
    35,985.09/53,981.49 = 9,690.21/x
  3. Step 3: Cross multiply
    35,985.09x = 53,981.49 × 9,690.21
  4. Step 4: Simplify right side
    35,985.09x = 523,091,974.21
  5. Step 5: Solve for x
    x = 523,091,974.21/35,985.09
  6. Step 6: Final answer
    x = 14,536.35

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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.