Home / 19,689.40-29,538.15-6,551.20

Finding the Fourth Proportional to 19,689.40, 29,538.15 and 6,551.20

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Solution

The fourth proportional to 19,689.40, 29,538.15 and 6,551.20 is: 9,828.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.40 : 29,538.15 = 6,551.20 : x
  2. Step 2: Convert to fraction form
    19,689.40/29,538.15 = 6,551.20/x
  3. Step 3: Cross multiply
    19,689.40x = 29,538.15 × 6,551.20
  4. Step 4: Simplify right side
    19,689.40x = 193,510,328.28
  5. Step 5: Solve for x
    x = 193,510,328.28/19,689.40
  6. Step 6: Final answer
    x = 9,828.15

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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.