Home / 20,117.34-30,172.53-5,326.47

Finding the Fourth Proportional to 20,117.34, 30,172.53 and 5,326.47

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Solution

The fourth proportional to 20,117.34, 30,172.53 and 5,326.47 is: 7,988.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.34 : 30,172.53 = 5,326.47 : x
  2. Step 2: Convert to fraction form
    20,117.34/30,172.53 = 5,326.47/x
  3. Step 3: Cross multiply
    20,117.34x = 30,172.53 × 5,326.47
  4. Step 4: Simplify right side
    20,117.34x = 160,713,075.87
  5. Step 5: Solve for x
    x = 160,713,075.87/20,117.34
  6. Step 6: Final answer
    x = 7,988.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.