Home / 12,688.74-18,925.82-11,957.00

Finding the Fourth Proportional to 12,688.74, 18,925.82 and 11,957.00

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Solution

The fourth proportional to 12,688.74, 18,925.82 and 11,957.00 is: 17,834.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.74 : 18,925.82 = 11,957.00 : x
  2. Step 2: Convert to fraction form
    12,688.74/18,925.82 = 11,957.00/x
  3. Step 3: Cross multiply
    12,688.74x = 18,925.82 × 11,957.00
  4. Step 4: Simplify right side
    12,688.74x = 226,295,920.16
  5. Step 5: Solve for x
    x = 226,295,920.16/12,688.74
  6. Step 6: Final answer
    x = 17,834.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.