Home / 30,532.36-42,136.98-19,211.55

Finding the Fourth Proportional to 30,532.36, 42,136.98 and 19,211.55

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Solution

The fourth proportional to 30,532.36, 42,136.98 and 19,211.55 is: 26,513.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,532.36 : 42,136.98 = 19,211.55 : x
  2. Step 2: Convert to fraction form
    30,532.36/42,136.98 = 19,211.55/x
  3. Step 3: Cross multiply
    30,532.36x = 42,136.98 × 19,211.55
  4. Step 4: Simplify right side
    30,532.36x = 809,516,985.69
  5. Step 5: Solve for x
    x = 809,516,985.69/30,532.36
  6. Step 6: Final answer
    x = 26,513.41

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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.