Home / 39,447.72-59,158.80-13,145.40

Finding the Fourth Proportional to 39,447.72, 59,158.80 and 13,145.40

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Solution

The fourth proportional to 39,447.72, 59,158.80 and 13,145.40 is: 19,713.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,447.72 : 59,158.80 = 13,145.40 : x
  2. Step 2: Convert to fraction form
    39,447.72/59,158.80 = 13,145.40/x
  3. Step 3: Cross multiply
    39,447.72x = 59,158.80 × 13,145.40
  4. Step 4: Simplify right side
    39,447.72x = 777,666,089.52
  5. Step 5: Solve for x
    x = 777,666,089.52/39,447.72
  6. Step 6: Final answer
    x = 19,713.84

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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.