Home / 18,947.47-28,384.89-10,602.25

Finding the Fourth Proportional to 18,947.47, 28,384.89 and 10,602.25

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Solution

The fourth proportional to 18,947.47, 28,384.89 and 10,602.25 is: 15,883.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.47 : 28,384.89 = 10,602.25 : x
  2. Step 2: Convert to fraction form
    18,947.47/28,384.89 = 10,602.25/x
  3. Step 3: Cross multiply
    18,947.47x = 28,384.89 × 10,602.25
  4. Step 4: Simplify right side
    18,947.47x = 300,943,700.00
  5. Step 5: Solve for x
    x = 300,943,700.00/18,947.47
  6. Step 6: Final answer
    x = 15,883.05

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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.