Home / 19,775.13-27,289.67-13,487.50

Finding the Fourth Proportional to 19,775.13, 27,289.67 and 13,487.50

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Solution

The fourth proportional to 19,775.13, 27,289.67 and 13,487.50 is: 18,612.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,775.13 : 27,289.67 = 13,487.50 : x
  2. Step 2: Convert to fraction form
    19,775.13/27,289.67 = 13,487.50/x
  3. Step 3: Cross multiply
    19,775.13x = 27,289.67 × 13,487.50
  4. Step 4: Simplify right side
    19,775.13x = 368,069,424.13
  5. Step 5: Solve for x
    x = 368,069,424.13/19,775.13
  6. Step 6: Final answer
    x = 18,612.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.