Home / 28,189.10-42,253.14-18,335.45

Finding the Fourth Proportional to 28,189.10, 42,253.14 and 18,335.45

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Solution

The fourth proportional to 28,189.10, 42,253.14 and 18,335.45 is: 27,483.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.10 : 42,253.14 = 18,335.45 : x
  2. Step 2: Convert to fraction form
    28,189.10/42,253.14 = 18,335.45/x
  3. Step 3: Cross multiply
    28,189.10x = 42,253.14 × 18,335.45
  4. Step 4: Simplify right side
    28,189.10x = 774,730,335.81
  5. Step 5: Solve for x
    x = 774,730,335.81/28,189.10
  6. Step 6: Final answer
    x = 27,483.33

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1.5x scale

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.