Home / 30,816.90-42,528.60-19,482.30

Finding the Fourth Proportional to 30,816.90, 42,528.60 and 19,482.30

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Solution

The fourth proportional to 30,816.90, 42,528.60 and 19,482.30 is: 26,886.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,816.90 : 42,528.60 = 19,482.30 : x
  2. Step 2: Convert to fraction form
    30,816.90/42,528.60 = 19,482.30/x
  3. Step 3: Cross multiply
    30,816.90x = 42,528.60 × 19,482.30
  4. Step 4: Simplify right side
    30,816.90x = 828,554,943.78
  5. Step 5: Solve for x
    x = 828,554,943.78/30,816.90
  6. Step 6: Final answer
    x = 26,886.38

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.