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Finding the Fourth Proportional to 14,700.16, 20,285.98 and 7,985.89

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Solution

The fourth proportional to 14,700.16, 20,285.98 and 7,985.89 is: 11,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,700.16 : 20,285.98 = 7,985.89 : x
  2. Step 2: Convert to fraction form
    14,700.16/20,285.98 = 7,985.89/x
  3. Step 3: Cross multiply
    14,700.16x = 20,285.98 × 7,985.89
  4. Step 4: Simplify right side
    14,700.16x = 162,001,610.21
  5. Step 5: Solve for x
    x = 162,001,610.21/14,700.16
  6. Step 6: Final answer
    x = 11,020.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.