Home / 20,559.36-28,384.14-13,498.16

Finding the Fourth Proportional to 20,559.36, 28,384.14 and 13,498.16

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Solution

The fourth proportional to 20,559.36, 28,384.14 and 13,498.16 is: 18,635.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.36 : 28,384.14 = 13,498.16 : x
  2. Step 2: Convert to fraction form
    20,559.36/28,384.14 = 13,498.16/x
  3. Step 3: Cross multiply
    20,559.36x = 28,384.14 × 13,498.16
  4. Step 4: Simplify right side
    20,559.36x = 383,133,663.18
  5. Step 5: Solve for x
    x = 383,133,663.18/20,559.36
  6. Step 6: Final answer
    x = 18,635.49

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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.