Home / 28,027,478.16-38,679,044.85-15,638,653.71

Finding the Fourth Proportional to 28,027,478.16, 38,679,044.85 and 15,638,653.71

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Solution

The fourth proportional to 28,027,478.16, 38,679,044.85 and 15,638,653.71 is: 21,581,969.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,027,478.16 : 38,679,044.85 = 15,638,653.71 : x
  2. Step 2: Convert to fraction form
    28,027,478.16/38,679,044.85 = 15,638,653.71/x
  3. Step 3: Cross multiply
    28,027,478.16x = 38,679,044.85 × 15,638,653.71
  4. Step 4: Simplify right side
    28,027,478.16x = 604,888,188,242,709
  5. Step 5: Solve for x
    x = 604,888,188,242,709/28,027,478.16
  6. Step 6: Final answer
    x = 21,581,969.84

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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.