Home / 28,731,018.53-39,648,478.95-15,678,499.52

Finding the Fourth Proportional to 28,731,018.53, 39,648,478.95 and 15,678,499.52

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Solution

The fourth proportional to 28,731,018.53, 39,648,478.95 and 15,678,499.52 is: 21,636,151.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,018.53 : 39,648,478.95 = 15,678,499.52 : x
  2. Step 2: Convert to fraction form
    28,731,018.53/39,648,478.95 = 15,678,499.52/x
  3. Step 3: Cross multiply
    28,731,018.53x = 39,648,478.95 × 15,678,499.52
  4. Step 4: Simplify right side
    28,731,018.53x = 621,628,658,136,744.62
  5. Step 5: Solve for x
    x = 621,628,658,136,744.62/28,731,018.53
  6. Step 6: Final answer
    x = 21,636,151.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.