Home / 28,606.37-42,921.35-12,587.67

Finding the Fourth Proportional to 28,606.37, 42,921.35 and 12,587.67

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Solution

The fourth proportional to 28,606.37, 42,921.35 and 12,587.67 is: 18,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,606.37 : 42,921.35 = 12,587.67 : x
  2. Step 2: Convert to fraction form
    28,606.37/42,921.35 = 12,587.67/x
  3. Step 3: Cross multiply
    28,606.37x = 42,921.35 × 12,587.67
  4. Step 4: Simplify right side
    28,606.37x = 540,279,726.82
  5. Step 5: Solve for x
    x = 540,279,726.82/28,606.37
  6. Step 6: Final answer
    x = 18,886.70

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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.