Home / 19,689.30-29,444.18-14,695.20

Finding the Fourth Proportional to 19,689.30, 29,444.18 and 14,695.20

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Solution

The fourth proportional to 19,689.30, 29,444.18 and 14,695.20 is: 21,975.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.30 : 29,444.18 = 14,695.20 : x
  2. Step 2: Convert to fraction form
    19,689.30/29,444.18 = 14,695.20/x
  3. Step 3: Cross multiply
    19,689.30x = 29,444.18 × 14,695.20
  4. Step 4: Simplify right side
    19,689.30x = 432,688,040.46
  5. Step 5: Solve for x
    x = 432,688,040.46/19,689.30
  6. Step 6: Final answer
    x = 21,975.80

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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.