Home / 30,678.13-45,979.53-15,878.62

Finding the Fourth Proportional to 30,678.13, 45,979.53 and 15,878.62

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Solution

The fourth proportional to 30,678.13, 45,979.53 and 15,878.62 is: 23,798.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,678.13 : 45,979.53 = 15,878.62 : x
  2. Step 2: Convert to fraction form
    30,678.13/45,979.53 = 15,878.62/x
  3. Step 3: Cross multiply
    30,678.13x = 45,979.53 × 15,878.62
  4. Step 4: Simplify right side
    30,678.13x = 730,091,484.65
  5. Step 5: Solve for x
    x = 730,091,484.65/30,678.13
  6. Step 6: Final answer
    x = 23,798.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.