Home / 20,543.07-30,666-18,051.95

Finding the Fourth Proportional to 20,543.07, 30,666 and 18,051.95

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Solution

The fourth proportional to 20,543.07, 30,666 and 18,051.95 is: 26,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.07 : 30,666 = 18,051.95 : x
  2. Step 2: Convert to fraction form
    20,543.07/30,666 = 18,051.95/x
  3. Step 3: Cross multiply
    20,543.07x = 30,666 × 18,051.95
  4. Step 4: Simplify right side
    20,543.07x = 553,580,945.37
  5. Step 5: Solve for x
    x = 553,580,945.37/20,543.07
  6. Step 6: Final answer
    x = 26,947.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.