Home / 28,571.30-42,856.95-13,777.46

Finding the Fourth Proportional to 28,571.30, 42,856.95 and 13,777.46

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Solution

The fourth proportional to 28,571.30, 42,856.95 and 13,777.46 is: 20,666.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,571.30 : 42,856.95 = 13,777.46 : x
  2. Step 2: Convert to fraction form
    28,571.30/42,856.95 = 13,777.46/x
  3. Step 3: Cross multiply
    28,571.30x = 42,856.95 × 13,777.46
  4. Step 4: Simplify right side
    28,571.30x = 590,459,700.06
  5. Step 5: Solve for x
    x = 590,459,700.06/28,571.30
  6. Step 6: Final answer
    x = 20,666.19

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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.