Home / 28,686.72-42,999.32-13,875.27

Finding the Fourth Proportional to 28,686.72, 42,999.32 and 13,875.27

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Solution

The fourth proportional to 28,686.72, 42,999.32 and 13,875.27 is: 20,798.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.72 : 42,999.32 = 13,875.27 : x
  2. Step 2: Convert to fraction form
    28,686.72/42,999.32 = 13,875.27/x
  3. Step 3: Cross multiply
    28,686.72x = 42,999.32 × 13,875.27
  4. Step 4: Simplify right side
    28,686.72x = 596,627,048.26
  5. Step 5: Solve for x
    x = 596,627,048.26/28,686.72
  6. Step 6: Final answer
    x = 20,798.02

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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.