Home / 20,870.07-28,804.94-19,188.81

Finding the Fourth Proportional to 20,870.07, 28,804.94 and 19,188.81

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Solution

The fourth proportional to 20,870.07, 28,804.94 and 19,188.81 is: 26,484.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.07 : 28,804.94 = 19,188.81 : x
  2. Step 2: Convert to fraction form
    20,870.07/28,804.94 = 19,188.81/x
  3. Step 3: Cross multiply
    20,870.07x = 28,804.94 × 19,188.81
  4. Step 4: Simplify right side
    20,870.07x = 552,732,424.78
  5. Step 5: Solve for x
    x = 552,732,424.78/20,870.07
  6. Step 6: Final answer
    x = 26,484.45

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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.