Home / 20,802.72-28,705.59-11,848.35

Finding the Fourth Proportional to 20,802.72, 28,705.59 and 11,848.35

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Solution

The fourth proportional to 20,802.72, 28,705.59 and 11,848.35 is: 16,349.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.72 : 28,705.59 = 11,848.35 : x
  2. Step 2: Convert to fraction form
    20,802.72/28,705.59 = 11,848.35/x
  3. Step 3: Cross multiply
    20,802.72x = 28,705.59 × 11,848.35
  4. Step 4: Simplify right side
    20,802.72x = 340,113,877.28
  5. Step 5: Solve for x
    x = 340,113,877.28/20,802.72
  6. Step 6: Final answer
    x = 16,349.49

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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.