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Finding the Fourth Proportional to 19,555.90, 26,987 and 10,603.34

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Solution

The fourth proportional to 19,555.90, 26,987 and 10,603.34 is: 14,632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,555.90 : 26,987 = 10,603.34 : x
  2. Step 2: Convert to fraction form
    19,555.90/26,987 = 10,603.34/x
  3. Step 3: Cross multiply
    19,555.90x = 26,987 × 10,603.34
  4. Step 4: Simplify right side
    19,555.90x = 286,152,336.58
  5. Step 5: Solve for x
    x = 286,152,336.58/19,555.90
  6. Step 6: Final answer
    x = 14,632.53

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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.