Home / 53,333.18-79,999.77-13,890.17

Finding the Fourth Proportional to 53,333.18, 79,999.77 and 13,890.17

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Solution

The fourth proportional to 53,333.18, 79,999.77 and 13,890.17 is: 20,835.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,333.18 : 79,999.77 = 13,890.17 : x
  2. Step 2: Convert to fraction form
    53,333.18/79,999.77 = 13,890.17/x
  3. Step 3: Cross multiply
    53,333.18x = 79,999.77 × 13,890.17
  4. Step 4: Simplify right side
    53,333.18x = 1,111,210,405.26
  5. Step 5: Solve for x
    x = 1,111,210,405.26/53,333.18
  6. Step 6: Final answer
    x = 20,835.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.