Home / 39,418.80-59,128.65-13,123.50

Finding the Fourth Proportional to 39,418.80, 59,128.65 and 13,123.50

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Solution

The fourth proportional to 39,418.80, 59,128.65 and 13,123.50 is: 19,685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,418.80 : 59,128.65 = 13,123.50 : x
  2. Step 2: Convert to fraction form
    39,418.80/59,128.65 = 13,123.50/x
  3. Step 3: Cross multiply
    39,418.80x = 59,128.65 × 13,123.50
  4. Step 4: Simplify right side
    39,418.80x = 775,974,838.28
  5. Step 5: Solve for x
    x = 775,974,838.28/39,418.80
  6. Step 6: Final answer
    x = 19,685.40

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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.