Home / 30,259.65-45,389.48-28,315.65

Finding the Fourth Proportional to 30,259.65, 45,389.48 and 28,315.65

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Solution

The fourth proportional to 30,259.65, 45,389.48 and 28,315.65 is: 42,473.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,259.65 : 45,389.48 = 28,315.65 : x
  2. Step 2: Convert to fraction form
    30,259.65/45,389.48 = 28,315.65/x
  3. Step 3: Cross multiply
    30,259.65x = 45,389.48 × 28,315.65
  4. Step 4: Simplify right side
    30,259.65x = 1,285,232,487.78
  5. Step 5: Solve for x
    x = 1,285,232,487.78/30,259.65
  6. Step 6: Final answer
    x = 42,473.48

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Double scale
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Similar ratio
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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.