Home / 21,677.10-29,913.76-12,117.00

Finding the Fourth Proportional to 21,677.10, 29,913.76 and 12,117.00

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Solution

The fourth proportional to 21,677.10, 29,913.76 and 12,117.00 is: 16,721.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,677.10 : 29,913.76 = 12,117.00 : x
  2. Step 2: Convert to fraction form
    21,677.10/29,913.76 = 12,117.00/x
  3. Step 3: Cross multiply
    21,677.10x = 29,913.76 × 12,117.00
  4. Step 4: Simplify right side
    21,677.10x = 362,465,107.19
  5. Step 5: Solve for x
    x = 362,465,107.19/21,677.10
  6. Step 6: Final answer
    x = 16,721.11

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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.