Home / 28,254.08-38,980.16-21,795.52

Finding the Fourth Proportional to 28,254.08, 38,980.16 and 21,795.52

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Solution

The fourth proportional to 28,254.08, 38,980.16 and 21,795.52 is: 30,069.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,254.08 : 38,980.16 = 21,795.52 : x
  2. Step 2: Convert to fraction form
    28,254.08/38,980.16 = 21,795.52/x
  3. Step 3: Cross multiply
    28,254.08x = 38,980.16 × 21,795.52
  4. Step 4: Simplify right side
    28,254.08x = 849,592,856.88
  5. Step 5: Solve for x
    x = 849,592,856.88/28,254.08
  6. Step 6: Final answer
    x = 30,069.74

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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.