Home / 12,721.64-19,088.14-4,931.06

Finding the Fourth Proportional to 12,721.64, 19,088.14 and 4,931.06

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Solution

The fourth proportional to 12,721.64, 19,088.14 and 4,931.06 is: 7,398.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.64 : 19,088.14 = 4,931.06 : x
  2. Step 2: Convert to fraction form
    12,721.64/19,088.14 = 4,931.06/x
  3. Step 3: Cross multiply
    12,721.64x = 19,088.14 × 4,931.06
  4. Step 4: Simplify right side
    12,721.64x = 94,124,763.63
  5. Step 5: Solve for x
    x = 94,124,763.63/12,721.64
  6. Step 6: Final answer
    x = 7,398.79

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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.