Home / 30,740.16-42,421.58-17,311.65

Finding the Fourth Proportional to 30,740.16, 42,421.58 and 17,311.65

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Solution

The fourth proportional to 30,740.16, 42,421.58 and 17,311.65 is: 23,890.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,740.16 : 42,421.58 = 17,311.65 : x
  2. Step 2: Convert to fraction form
    30,740.16/42,421.58 = 17,311.65/x
  3. Step 3: Cross multiply
    30,740.16x = 42,421.58 × 17,311.65
  4. Step 4: Simplify right side
    30,740.16x = 734,387,545.41
  5. Step 5: Solve for x
    x = 734,387,545.41/30,740.16
  6. Step 6: Final answer
    x = 23,890.17

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Double scale
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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.