Home / 21,309,981.60-31,968,082.80-6,930,602.40

Finding the Fourth Proportional to 21,309,981.60, 31,968,082.80 and 6,930,602.40

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Solution

The fourth proportional to 21,309,981.60, 31,968,082.80 and 6,930,602.40 is: 10,396,915.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,981.60 : 31,968,082.80 = 6,930,602.40 : x
  2. Step 2: Convert to fraction form
    21,309,981.60/31,968,082.80 = 6,930,602.40/x
  3. Step 3: Cross multiply
    21,309,981.60x = 31,968,082.80 × 6,930,602.40
  4. Step 4: Simplify right side
    21,309,981.60x = 221,558,071,377,078.75
  5. Step 5: Solve for x
    x = 221,558,071,377,078.75/21,309,981.60
  6. Step 6: Final answer
    x = 10,396,915.19

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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.