Home / 28,410.35-42,615.50-8,688.90

Finding the Fourth Proportional to 28,410.35, 42,615.50 and 8,688.90

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Solution

The fourth proportional to 28,410.35, 42,615.50 and 8,688.90 is: 13,033.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,410.35 : 42,615.50 = 8,688.90 : x
  2. Step 2: Convert to fraction form
    28,410.35/42,615.50 = 8,688.90/x
  3. Step 3: Cross multiply
    28,410.35x = 42,615.50 × 8,688.90
  4. Step 4: Simplify right side
    28,410.35x = 370,281,774.51
  5. Step 5: Solve for x
    x = 370,281,774.51/28,410.35
  6. Step 6: Final answer
    x = 13,033.34

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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.