Home / 19,985.10-29,977.65-8,306.70

Finding the Fourth Proportional to 19,985.10, 29,977.65 and 8,306.70

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Solution

The fourth proportional to 19,985.10, 29,977.65 and 8,306.70 is: 12,460.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.10 : 29,977.65 = 8,306.70 : x
  2. Step 2: Convert to fraction form
    19,985.10/29,977.65 = 8,306.70/x
  3. Step 3: Cross multiply
    19,985.10x = 29,977.65 × 8,306.70
  4. Step 4: Simplify right side
    19,985.10x = 249,015,345.26
  5. Step 5: Solve for x
    x = 249,015,345.26/19,985.10
  6. Step 6: Final answer
    x = 12,460.05

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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.