Home / 21,735.60-29,952.12-15,430.32

Finding the Fourth Proportional to 21,735.60, 29,952.12 and 15,430.32

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Solution

The fourth proportional to 21,735.60, 29,952.12 and 15,430.32 is: 21,263.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,735.60 : 29,952.12 = 15,430.32 : x
  2. Step 2: Convert to fraction form
    21,735.60/29,952.12 = 15,430.32/x
  3. Step 3: Cross multiply
    21,735.60x = 29,952.12 × 15,430.32
  4. Step 4: Simplify right side
    21,735.60x = 462,170,796.28
  5. Step 5: Solve for x
    x = 462,170,796.28/21,735.60
  6. Step 6: Final answer
    x = 21,263.31

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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.