Home / 28,118,736.40-42,162,931.64-12,757,642

Finding the Fourth Proportional to 28,118,736.40, 42,162,931.64 and 12,757,642

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Solution

The fourth proportional to 28,118,736.40, 42,162,931.64 and 12,757,642 is: 19,129,578.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118,736.40 : 42,162,931.64 = 12,757,642 : x
  2. Step 2: Convert to fraction form
    28,118,736.40/42,162,931.64 = 12,757,642/x
  3. Step 3: Cross multiply
    28,118,736.40x = 42,162,931.64 × 12,757,642
  4. Step 4: Simplify right side
    28,118,736.40x = 537,899,587,533,592.88
  5. Step 5: Solve for x
    x = 537,899,587,533,592.88/28,118,736.40
  6. Step 6: Final answer
    x = 19,129,578.94

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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.