Home / 39,748.80-59,623.20-21,316.80

Finding the Fourth Proportional to 39,748.80, 59,623.20 and 21,316.80

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Solution

The fourth proportional to 39,748.80, 59,623.20 and 21,316.80 is: 31,975.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,748.80 : 59,623.20 = 21,316.80 : x
  2. Step 2: Convert to fraction form
    39,748.80/59,623.20 = 21,316.80/x
  3. Step 3: Cross multiply
    39,748.80x = 59,623.20 × 21,316.80
  4. Step 4: Simplify right side
    39,748.80x = 1,270,975,829.76
  5. Step 5: Solve for x
    x = 1,270,975,829.76/39,748.80
  6. Step 6: Final answer
    x = 31,975.20

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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.