Home / 18,779,603.84-28,179,872.40-10,143,530

Finding the Fourth Proportional to 18,779,603.84, 28,179,872.40 and 10,143,530

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Solution

The fourth proportional to 18,779,603.84, 28,179,872.40 and 10,143,530 is: 15,220,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779,603.84 : 28,179,872.40 = 10,143,530 : x
  2. Step 2: Convert to fraction form
    18,779,603.84/28,179,872.40 = 10,143,530/x
  3. Step 3: Cross multiply
    18,779,603.84x = 28,179,872.40 × 10,143,530
  4. Step 4: Simplify right side
    18,779,603.84x = 285,843,381,085,572
  5. Step 5: Solve for x
    x = 285,843,381,085,572/18,779,603.84
  6. Step 6: Final answer
    x = 15,220,948.40

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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.