Home / 28,113.12-42,157.80-11,461.74

Finding the Fourth Proportional to 28,113.12, 42,157.80 and 11,461.74

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Solution

The fourth proportional to 28,113.12, 42,157.80 and 11,461.74 is: 17,187.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.12 : 42,157.80 = 11,461.74 : x
  2. Step 2: Convert to fraction form
    28,113.12/42,157.80 = 11,461.74/x
  3. Step 3: Cross multiply
    28,113.12x = 42,157.80 × 11,461.74
  4. Step 4: Simplify right side
    28,113.12x = 483,201,742.57
  5. Step 5: Solve for x
    x = 483,201,742.57/28,113.12
  6. Step 6: Final answer
    x = 17,187.77

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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.