Home / 20,587.98-28,396.80-17,430.47

Finding the Fourth Proportional to 20,587.98, 28,396.80 and 17,430.47

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Solution

The fourth proportional to 20,587.98, 28,396.80 and 17,430.47 is: 24,041.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.98 : 28,396.80 = 17,430.47 : x
  2. Step 2: Convert to fraction form
    20,587.98/28,396.80 = 17,430.47/x
  3. Step 3: Cross multiply
    20,587.98x = 28,396.80 × 17,430.47
  4. Step 4: Simplify right side
    20,587.98x = 494,969,428.51
  5. Step 5: Solve for x
    x = 494,969,428.51/20,587.98
  6. Step 6: Final answer
    x = 24,041.67

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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.