Home / 30,931.62-42,688.32-17,507.18

Finding the Fourth Proportional to 30,931.62, 42,688.32 and 17,507.18

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Solution

The fourth proportional to 30,931.62, 42,688.32 and 17,507.18 is: 24,161.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,931.62 : 42,688.32 = 17,507.18 : x
  2. Step 2: Convert to fraction form
    30,931.62/42,688.32 = 17,507.18/x
  3. Step 3: Cross multiply
    30,931.62x = 42,688.32 × 17,507.18
  4. Step 4: Simplify right side
    30,931.62x = 747,352,102.14
  5. Step 5: Solve for x
    x = 747,352,102.14/30,931.62
  6. Step 6: Final answer
    x = 24,161.43

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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.