Home / 19,430.40-29,145.60-8,335.20

Finding the Fourth Proportional to 19,430.40, 29,145.60 and 8,335.20

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Solution

The fourth proportional to 19,430.40, 29,145.60 and 8,335.20 is: 12,502.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,430.40 : 29,145.60 = 8,335.20 : x
  2. Step 2: Convert to fraction form
    19,430.40/29,145.60 = 8,335.20/x
  3. Step 3: Cross multiply
    19,430.40x = 29,145.60 × 8,335.20
  4. Step 4: Simplify right side
    19,430.40x = 242,934,405.12
  5. Step 5: Solve for x
    x = 242,934,405.12/19,430.40
  6. Step 6: Final answer
    x = 12,502.80

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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.