Home / 19,290.64-28,938.08-6,139.93

Finding the Fourth Proportional to 19,290.64, 28,938.08 and 6,139.93

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Solution

The fourth proportional to 19,290.64, 28,938.08 and 6,139.93 is: 9,210.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.64 : 28,938.08 = 6,139.93 : x
  2. Step 2: Convert to fraction form
    19,290.64/28,938.08 = 6,139.93/x
  3. Step 3: Cross multiply
    19,290.64x = 28,938.08 × 6,139.93
  4. Step 4: Simplify right side
    19,290.64x = 177,677,785.53
  5. Step 5: Solve for x
    x = 177,677,785.53/19,290.64
  6. Step 6: Final answer
    x = 9,210.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.