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Finding the Fourth Proportional to 18,735.76, 25,810.16 and 16,038.40

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Solution

The fourth proportional to 18,735.76, 25,810.16 and 16,038.40 is: 22,094.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.76 : 25,810.16 = 16,038.40 : x
  2. Step 2: Convert to fraction form
    18,735.76/25,810.16 = 16,038.40/x
  3. Step 3: Cross multiply
    18,735.76x = 25,810.16 × 16,038.40
  4. Step 4: Simplify right side
    18,735.76x = 413,953,670.14
  5. Step 5: Solve for x
    x = 413,953,670.14/18,735.76
  6. Step 6: Final answer
    x = 22,094.31

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1.5x scale

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.