Home / 39,748.80-59,621.60-18,681.28

Finding the Fourth Proportional to 39,748.80, 59,621.60 and 18,681.28

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Solution

The fourth proportional to 39,748.80, 59,621.60 and 18,681.28 is: 28,021.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,748.80 : 59,621.60 = 18,681.28 : x
  2. Step 2: Convert to fraction form
    39,748.80/59,621.60 = 18,681.28/x
  3. Step 3: Cross multiply
    39,748.80x = 59,621.60 × 18,681.28
  4. Step 4: Simplify right side
    39,748.80x = 1,113,807,803.65
  5. Step 5: Solve for x
    x = 1,113,807,803.65/39,748.80
  6. Step 6: Final answer
    x = 28,021.17

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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.