Home / 28,158.13-42,220.79-12,362.52

Finding the Fourth Proportional to 28,158.13, 42,220.79 and 12,362.52

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Solution

The fourth proportional to 28,158.13, 42,220.79 and 12,362.52 is: 18,536.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.13 : 42,220.79 = 12,362.52 : x
  2. Step 2: Convert to fraction form
    28,158.13/42,220.79 = 12,362.52/x
  3. Step 3: Cross multiply
    28,158.13x = 42,220.79 × 12,362.52
  4. Step 4: Simplify right side
    28,158.13x = 521,955,298.98
  5. Step 5: Solve for x
    x = 521,955,298.98/28,158.13
  6. Step 6: Final answer
    x = 18,536.58

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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.