Home / 19,862.15-27,410.40-11,478.65

Finding the Fourth Proportional to 19,862.15, 27,410.40 and 11,478.65

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Solution

The fourth proportional to 19,862.15, 27,410.40 and 11,478.65 is: 15,840.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,862.15 : 27,410.40 = 11,478.65 : x
  2. Step 2: Convert to fraction form
    19,862.15/27,410.40 = 11,478.65/x
  3. Step 3: Cross multiply
    19,862.15x = 27,410.40 × 11,478.65
  4. Step 4: Simplify right side
    19,862.15x = 314,634,250.91
  5. Step 5: Solve for x
    x = 314,634,250.91/19,862.15
  6. Step 6: Final answer
    x = 15,840.90

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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.