Home / 30,970.53-42,737.18-17,172.74

Finding the Fourth Proportional to 30,970.53, 42,737.18 and 17,172.74

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Solution

The fourth proportional to 30,970.53, 42,737.18 and 17,172.74 is: 23,697.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,970.53 : 42,737.18 = 17,172.74 : x
  2. Step 2: Convert to fraction form
    30,970.53/42,737.18 = 17,172.74/x
  3. Step 3: Cross multiply
    30,970.53x = 42,737.18 × 17,172.74
  4. Step 4: Simplify right side
    30,970.53x = 733,914,501.45
  5. Step 5: Solve for x
    x = 733,914,501.45/30,970.53
  6. Step 6: Final answer
    x = 23,697.19

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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.