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Finding the Fourth Proportional to 30,503.88, 42,095.16 and 17,075.07

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Solution

The fourth proportional to 30,503.88, 42,095.16 and 17,075.07 is: 23,563.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,503.88 : 42,095.16 = 17,075.07 : x
  2. Step 2: Convert to fraction form
    30,503.88/42,095.16 = 17,075.07/x
  3. Step 3: Cross multiply
    30,503.88x = 42,095.16 × 17,075.07
  4. Step 4: Simplify right side
    30,503.88x = 718,777,803.66
  5. Step 5: Solve for x
    x = 718,777,803.66/30,503.88
  6. Step 6: Final answer
    x = 23,563.49

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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.