Home / 39,283.96-58,935.18-12,988.72

Finding the Fourth Proportional to 39,283.96, 58,935.18 and 12,988.72

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Solution

The fourth proportional to 39,283.96, 58,935.18 and 12,988.72 is: 19,486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,283.96 : 58,935.18 = 12,988.72 : x
  2. Step 2: Convert to fraction form
    39,283.96/58,935.18 = 12,988.72/x
  3. Step 3: Cross multiply
    39,283.96x = 58,935.18 × 12,988.72
  4. Step 4: Simplify right side
    39,283.96x = 765,492,551.17
  5. Step 5: Solve for x
    x = 765,492,551.17/39,283.96
  6. Step 6: Final answer
    x = 19,486.14

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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.