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Finding the Fourth Proportional to 19,695.48, 29,510.38 and 14,140.48

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Solution

The fourth proportional to 19,695.48, 29,510.38 and 14,140.48 is: 21,187.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,695.48 : 29,510.38 = 14,140.48 : x
  2. Step 2: Convert to fraction form
    19,695.48/29,510.38 = 14,140.48/x
  3. Step 3: Cross multiply
    19,695.48x = 29,510.38 × 14,140.48
  4. Step 4: Simplify right side
    19,695.48x = 417,290,938.18
  5. Step 5: Solve for x
    x = 417,290,938.18/19,695.48
  6. Step 6: Final answer
    x = 21,187.14

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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.