Home / 30,988.37-42,762.31-17,559.78

Finding the Fourth Proportional to 30,988.37, 42,762.31 and 17,559.78

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Solution

The fourth proportional to 30,988.37, 42,762.31 and 17,559.78 is: 24,231.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,988.37 : 42,762.31 = 17,559.78 : x
  2. Step 2: Convert to fraction form
    30,988.37/42,762.31 = 17,559.78/x
  3. Step 3: Cross multiply
    30,988.37x = 42,762.31 × 17,559.78
  4. Step 4: Simplify right side
    30,988.37x = 750,896,711.99
  5. Step 5: Solve for x
    x = 750,896,711.99/30,988.37
  6. Step 6: Final answer
    x = 24,231.57

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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.