Home / 20,551,479.32-30,831,547.56-7,771,701.08

Finding the Fourth Proportional to 20,551,479.32, 30,831,547.56 and 7,771,701.08

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Solution

The fourth proportional to 20,551,479.32, 30,831,547.56 and 7,771,701.08 is: 11,659,188.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551,479.32 : 30,831,547.56 = 7,771,701.08 : x
  2. Step 2: Convert to fraction form
    20,551,479.32/30,831,547.56 = 7,771,701.08/x
  3. Step 3: Cross multiply
    20,551,479.32x = 30,831,547.56 × 7,771,701.08
  4. Step 4: Simplify right side
    20,551,479.32x = 239,613,571,470,123.34
  5. Step 5: Solve for x
    x = 239,613,571,470,123.34/20,551,479.32
  6. Step 6: Final answer
    x = 11,659,188.51

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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.