Home / 20,657.34-28,507.02-11,225.94

Finding the Fourth Proportional to 20,657.34, 28,507.02 and 11,225.94

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Solution

The fourth proportional to 20,657.34, 28,507.02 and 11,225.94 is: 15,491.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.34 : 28,507.02 = 11,225.94 : x
  2. Step 2: Convert to fraction form
    20,657.34/28,507.02 = 11,225.94/x
  3. Step 3: Cross multiply
    20,657.34x = 28,507.02 × 11,225.94
  4. Step 4: Simplify right side
    20,657.34x = 320,018,096.10
  5. Step 5: Solve for x
    x = 320,018,096.10/20,657.34
  6. Step 6: Final answer
    x = 15,491.74

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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.