Home / 30,681.84-42,309.76-28,895.96

Finding the Fourth Proportional to 30,681.84, 42,309.76 and 28,895.96

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Solution

The fourth proportional to 30,681.84, 42,309.76 and 28,895.96 is: 39,847.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,681.84 : 42,309.76 = 28,895.96 : x
  2. Step 2: Convert to fraction form
    30,681.84/42,309.76 = 28,895.96/x
  3. Step 3: Cross multiply
    30,681.84x = 42,309.76 × 28,895.96
  4. Step 4: Simplify right side
    30,681.84x = 1,222,581,132.57
  5. Step 5: Solve for x
    x = 1,222,581,132.57/30,681.84
  6. Step 6: Final answer
    x = 39,847.06

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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.