Home / 18,938.34-28,389.38-7,088.90

Finding the Fourth Proportional to 18,938.34, 28,389.38 and 7,088.90

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Solution

The fourth proportional to 18,938.34, 28,389.38 and 7,088.90 is: 10,626.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.34 : 28,389.38 = 7,088.90 : x
  2. Step 2: Convert to fraction form
    18,938.34/28,389.38 = 7,088.90/x
  3. Step 3: Cross multiply
    18,938.34x = 28,389.38 × 7,088.90
  4. Step 4: Simplify right side
    18,938.34x = 201,249,298.49
  5. Step 5: Solve for x
    x = 201,249,298.49/18,938.34
  6. Step 6: Final answer
    x = 10,626.55

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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.