Home / 19,407.90-29,111.85-12,798.30

Finding the Fourth Proportional to 19,407.90, 29,111.85 and 12,798.30

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Solution

The fourth proportional to 19,407.90, 29,111.85 and 12,798.30 is: 19,197.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,407.90 : 29,111.85 = 12,798.30 : x
  2. Step 2: Convert to fraction form
    19,407.90/29,111.85 = 12,798.30/x
  3. Step 3: Cross multiply
    19,407.90x = 29,111.85 × 12,798.30
  4. Step 4: Simplify right side
    19,407.90x = 372,582,189.86
  5. Step 5: Solve for x
    x = 372,582,189.86/19,407.90
  6. Step 6: Final answer
    x = 19,197.45

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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.