Home / 39,700.09-59,555.31-20,980.85

Finding the Fourth Proportional to 39,700.09, 59,555.31 and 20,980.85

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Solution

The fourth proportional to 39,700.09, 59,555.31 and 20,980.85 is: 31,474.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,700.09 : 59,555.31 = 20,980.85 : x
  2. Step 2: Convert to fraction form
    39,700.09/59,555.31 = 20,980.85/x
  3. Step 3: Cross multiply
    39,700.09x = 59,555.31 × 20,980.85
  4. Step 4: Simplify right side
    39,700.09x = 1,249,520,964.38
  5. Step 5: Solve for x
    x = 1,249,520,964.38/39,700.09
  6. Step 6: Final answer
    x = 31,474.01

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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.