Home / 28,289.70-42,406.74-12,503.34

Finding the Fourth Proportional to 28,289.70, 42,406.74 and 12,503.34

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Solution

The fourth proportional to 28,289.70, 42,406.74 and 12,503.34 is: 18,742.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.70 : 42,406.74 = 12,503.34 : x
  2. Step 2: Convert to fraction form
    28,289.70/42,406.74 = 12,503.34/x
  3. Step 3: Cross multiply
    28,289.70x = 42,406.74 × 12,503.34
  4. Step 4: Simplify right side
    28,289.70x = 530,225,888.51
  5. Step 5: Solve for x
    x = 530,225,888.51/28,289.70
  6. Step 6: Final answer
    x = 18,742.72

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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.