Home / 28,045.44-38,688.84-18,349.20

Finding the Fourth Proportional to 28,045.44, 38,688.84 and 18,349.20

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Solution

The fourth proportional to 28,045.44, 38,688.84 and 18,349.20 is: 25,312.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.44 : 38,688.84 = 18,349.20 : x
  2. Step 2: Convert to fraction form
    28,045.44/38,688.84 = 18,349.20/x
  3. Step 3: Cross multiply
    28,045.44x = 38,688.84 × 18,349.20
  4. Step 4: Simplify right side
    28,045.44x = 709,909,262.93
  5. Step 5: Solve for x
    x = 709,909,262.93/28,045.44
  6. Step 6: Final answer
    x = 25,312.82

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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.