Home / 28,487.03-42,693.36-20,616.05

Finding the Fourth Proportional to 28,487.03, 42,693.36 and 20,616.05

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Solution

The fourth proportional to 28,487.03, 42,693.36 and 20,616.05 is: 30,897.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.03 : 42,693.36 = 20,616.05 : x
  2. Step 2: Convert to fraction form
    28,487.03/42,693.36 = 20,616.05/x
  3. Step 3: Cross multiply
    28,487.03x = 42,693.36 × 20,616.05
  4. Step 4: Simplify right side
    28,487.03x = 880,168,444.43
  5. Step 5: Solve for x
    x = 880,168,444.43/28,487.03
  6. Step 6: Final answer
    x = 30,897.16

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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.