Home / 30,812.90-42,511.25-25,137.76

Finding the Fourth Proportional to 30,812.90, 42,511.25 and 25,137.76

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Solution

The fourth proportional to 30,812.90, 42,511.25 and 25,137.76 is: 34,681.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812.90 : 42,511.25 = 25,137.76 : x
  2. Step 2: Convert to fraction form
    30,812.90/42,511.25 = 25,137.76/x
  3. Step 3: Cross multiply
    30,812.90x = 42,511.25 × 25,137.76
  4. Step 4: Simplify right side
    30,812.90x = 1,068,637,599.80
  5. Step 5: Solve for x
    x = 1,068,637,599.80/30,812.90
  6. Step 6: Final answer
    x = 34,681.50

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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.