Home / 19,862.16-27,386.28-12,788.88

Finding the Fourth Proportional to 19,862.16, 27,386.28 and 12,788.88

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Solution

The fourth proportional to 19,862.16, 27,386.28 and 12,788.88 is: 17,633.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,862.16 : 27,386.28 = 12,788.88 : x
  2. Step 2: Convert to fraction form
    19,862.16/27,386.28 = 12,788.88/x
  3. Step 3: Cross multiply
    19,862.16x = 27,386.28 × 12,788.88
  4. Step 4: Simplify right side
    19,862.16x = 350,239,848.57
  5. Step 5: Solve for x
    x = 350,239,848.57/19,862.16
  6. Step 6: Final answer
    x = 17,633.52

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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.