Home / 12,510.49-18,787.21-11,108.08

Finding the Fourth Proportional to 12,510.49, 18,787.21 and 11,108.08

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Solution

The fourth proportional to 12,510.49, 18,787.21 and 11,108.08 is: 16,681.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.49 : 18,787.21 = 11,108.08 : x
  2. Step 2: Convert to fraction form
    12,510.49/18,787.21 = 11,108.08/x
  3. Step 3: Cross multiply
    12,510.49x = 18,787.21 × 11,108.08
  4. Step 4: Simplify right side
    12,510.49x = 208,689,831.66
  5. Step 5: Solve for x
    x = 208,689,831.66/12,510.49
  6. Step 6: Final answer
    x = 16,681.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.