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Finding the Fourth Proportional to 21,598.77, 29,806.60 and 12,038.39

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Solution

The fourth proportional to 21,598.77, 29,806.60 and 12,038.39 is: 16,613.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,598.77 : 29,806.60 = 12,038.39 : x
  2. Step 2: Convert to fraction form
    21,598.77/29,806.60 = 12,038.39/x
  3. Step 3: Cross multiply
    21,598.77x = 29,806.60 × 12,038.39
  4. Step 4: Simplify right side
    21,598.77x = 358,823,408.02
  5. Step 5: Solve for x
    x = 358,823,408.02/21,598.77
  6. Step 6: Final answer
    x = 16,613.14

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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.