Home / 12,303,071.70-18,454,607.55-5,128,618.20

Finding the Fourth Proportional to 12,303,071.70, 18,454,607.55 and 5,128,618.20

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Solution

The fourth proportional to 12,303,071.70, 18,454,607.55 and 5,128,618.20 is: 7,692,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303,071.70 : 18,454,607.55 = 5,128,618.20 : x
  2. Step 2: Convert to fraction form
    12,303,071.70/18,454,607.55 = 5,128,618.20/x
  3. Step 3: Cross multiply
    12,303,071.70x = 18,454,607.55 × 5,128,618.20
  4. Step 4: Simplify right side
    12,303,071.70x = 94,646,636,154,787.42
  5. Step 5: Solve for x
    x = 94,646,636,154,787.42/12,303,071.70
  6. Step 6: Final answer
    x = 7,692,927.30

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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.