Home / 30,518.65-42,118.25-17,091.15

Finding the Fourth Proportional to 30,518.65, 42,118.25 and 17,091.15

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Solution

The fourth proportional to 30,518.65, 42,118.25 and 17,091.15 is: 23,587.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,518.65 : 42,118.25 = 17,091.15 : x
  2. Step 2: Convert to fraction form
    30,518.65/42,118.25 = 17,091.15/x
  3. Step 3: Cross multiply
    30,518.65x = 42,118.25 × 17,091.15
  4. Step 4: Simplify right side
    30,518.65x = 719,849,328.49
  5. Step 5: Solve for x
    x = 719,849,328.49/30,518.65
  6. Step 6: Final answer
    x = 23,587.19

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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.