Home / 21,137,538.30-31,706,307.45-19,709,864.70

Finding the Fourth Proportional to 21,137,538.30, 31,706,307.45 and 19,709,864.70

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Solution

The fourth proportional to 21,137,538.30, 31,706,307.45 and 19,709,864.70 is: 29,564,797.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137,538.30 : 31,706,307.45 = 19,709,864.70 : x
  2. Step 2: Convert to fraction form
    21,137,538.30/31,706,307.45 = 19,709,864.70/x
  3. Step 3: Cross multiply
    21,137,538.30x = 31,706,307.45 × 19,709,864.70
  4. Step 4: Simplify right side
    21,137,538.30x = 624,927,029,976,102
  5. Step 5: Solve for x
    x = 624,927,029,976,102/21,137,538.30
  6. Step 6: Final answer
    x = 29,564,797.05

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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.