Home / 39,654.77-59,429.30-20,930.40

Finding the Fourth Proportional to 39,654.77, 59,429.30 and 20,930.40

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Solution

The fourth proportional to 39,654.77, 59,429.30 and 20,930.40 is: 31,367.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,654.77 : 59,429.30 = 20,930.40 : x
  2. Step 2: Convert to fraction form
    39,654.77/59,429.30 = 20,930.40/x
  3. Step 3: Cross multiply
    39,654.77x = 59,429.30 × 20,930.40
  4. Step 4: Simplify right side
    39,654.77x = 1,243,878,916.07
  5. Step 5: Solve for x
    x = 1,243,878,916.07/39,654.77
  6. Step 6: Final answer
    x = 31,367.70

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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.