Home / 30,957.36-42,720.48-16,810.08

Finding the Fourth Proportional to 30,957.36, 42,720.48 and 16,810.08

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Solution

The fourth proportional to 30,957.36, 42,720.48 and 16,810.08 is: 23,197.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,957.36 : 42,720.48 = 16,810.08 : x
  2. Step 2: Convert to fraction form
    30,957.36/42,720.48 = 16,810.08/x
  3. Step 3: Cross multiply
    30,957.36x = 42,720.48 × 16,810.08
  4. Step 4: Simplify right side
    30,957.36x = 718,134,686.44
  5. Step 5: Solve for x
    x = 718,134,686.44/30,957.36
  6. Step 6: Final answer
    x = 23,197.54

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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.