Home / 28,402.74-39,196.05-15,656.18

Finding the Fourth Proportional to 28,402.74, 39,196.05 and 15,656.18

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Solution

The fourth proportional to 28,402.74, 39,196.05 and 15,656.18 is: 21,605.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402.74 : 39,196.05 = 15,656.18 : x
  2. Step 2: Convert to fraction form
    28,402.74/39,196.05 = 15,656.18/x
  3. Step 3: Cross multiply
    28,402.74x = 39,196.05 × 15,656.18
  4. Step 4: Simplify right side
    28,402.74x = 613,660,218.11
  5. Step 5: Solve for x
    x = 613,660,218.11/28,402.74
  6. Step 6: Final answer
    x = 21,605.67

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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.