Home / 28,011.59-42,023.63-12,219.19

Finding the Fourth Proportional to 28,011.59, 42,023.63 and 12,219.19

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Solution

The fourth proportional to 28,011.59, 42,023.63 and 12,219.19 is: 18,331.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.59 : 42,023.63 = 12,219.19 : x
  2. Step 2: Convert to fraction form
    28,011.59/42,023.63 = 12,219.19/x
  3. Step 3: Cross multiply
    28,011.59x = 42,023.63 × 12,219.19
  4. Step 4: Simplify right side
    28,011.59x = 513,494,719.46
  5. Step 5: Solve for x
    x = 513,494,719.46/28,011.59
  6. Step 6: Final answer
    x = 18,331.51

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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.