Home / 15,300.08-21,115.70-8,587.52

Finding the Fourth Proportional to 15,300.08, 21,115.70 and 8,587.52

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Solution

The fourth proportional to 15,300.08, 21,115.70 and 8,587.52 is: 11,851.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,300.08 : 21,115.70 = 8,587.52 : x
  2. Step 2: Convert to fraction form
    15,300.08/21,115.70 = 8,587.52/x
  3. Step 3: Cross multiply
    15,300.08x = 21,115.70 × 8,587.52
  4. Step 4: Simplify right side
    15,300.08x = 181,331,496.06
  5. Step 5: Solve for x
    x = 181,331,496.06/15,300.08
  6. Step 6: Final answer
    x = 11,851.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.