Home / 18,684,011.10-28,026,016.65-5,220,839.10

Finding the Fourth Proportional to 18,684,011.10, 28,026,016.65 and 5,220,839.10

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Solution

The fourth proportional to 18,684,011.10, 28,026,016.65 and 5,220,839.10 is: 7,831,258.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,011.10 : 28,026,016.65 = 5,220,839.10 : x
  2. Step 2: Convert to fraction form
    18,684,011.10/28,026,016.65 = 5,220,839.10/x
  3. Step 3: Cross multiply
    18,684,011.10x = 28,026,016.65 × 5,220,839.10
  4. Step 4: Simplify right side
    18,684,011.10x = 146,319,323,543,571
  5. Step 5: Solve for x
    x = 146,319,323,543,571/18,684,011.10
  6. Step 6: Final answer
    x = 7,831,258.65

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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.