Home / 30,515.65-42,114.11-17,088.15

Finding the Fourth Proportional to 30,515.65, 42,114.11 and 17,088.15

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Solution

The fourth proportional to 30,515.65, 42,114.11 and 17,088.15 is: 23,583.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.65 : 42,114.11 = 17,088.15 : x
  2. Step 2: Convert to fraction form
    30,515.65/42,114.11 = 17,088.15/x
  3. Step 3: Cross multiply
    30,515.65x = 42,114.11 × 17,088.15
  4. Step 4: Simplify right side
    30,515.65x = 719,652,018.23
  5. Step 5: Solve for x
    x = 719,652,018.23/30,515.65
  6. Step 6: Final answer
    x = 23,583.05

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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.