Home / 19,774.48-29,639.84-13,191.60

Finding the Fourth Proportional to 19,774.48, 29,639.84 and 13,191.60

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Solution

The fourth proportional to 19,774.48, 29,639.84 and 13,191.60 is: 19,772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,774.48 : 29,639.84 = 13,191.60 : x
  2. Step 2: Convert to fraction form
    19,774.48/29,639.84 = 13,191.60/x
  3. Step 3: Cross multiply
    19,774.48x = 29,639.84 × 13,191.60
  4. Step 4: Simplify right side
    19,774.48x = 390,996,913.34
  5. Step 5: Solve for x
    x = 390,996,913.34/19,774.48
  6. Step 6: Final answer
    x = 19,772.80

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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.