Home / 43,151.47-64,730-13,570.45

Finding the Fourth Proportional to 43,151.47, 64,730 and 13,570.45

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Solution

The fourth proportional to 43,151.47, 64,730 and 13,570.45 is: 20,356.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,151.47 : 64,730 = 13,570.45 : x
  2. Step 2: Convert to fraction form
    43,151.47/64,730 = 13,570.45/x
  3. Step 3: Cross multiply
    43,151.47x = 64,730 × 13,570.45
  4. Step 4: Simplify right side
    43,151.47x = 878,415,228.50
  5. Step 5: Solve for x
    x = 878,415,228.50/43,151.47
  6. Step 6: Final answer
    x = 20,356.55

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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.