Home / 39,783.60-59,675.40-12,081.60

Finding the Fourth Proportional to 39,783.60, 59,675.40 and 12,081.60

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Solution

The fourth proportional to 39,783.60, 59,675.40 and 12,081.60 is: 18,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,783.60 : 59,675.40 = 12,081.60 : x
  2. Step 2: Convert to fraction form
    39,783.60/59,675.40 = 12,081.60/x
  3. Step 3: Cross multiply
    39,783.60x = 59,675.40 × 12,081.60
  4. Step 4: Simplify right side
    39,783.60x = 720,974,312.64
  5. Step 5: Solve for x
    x = 720,974,312.64/39,783.60
  6. Step 6: Final answer
    x = 18,122.40

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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.