Home / 20,475.95-30,774.51-16,988.58

Finding the Fourth Proportional to 20,475.95, 30,774.51 and 16,988.58

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Solution

The fourth proportional to 20,475.95, 30,774.51 and 16,988.58 is: 25,533.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.95 : 30,774.51 = 16,988.58 : x
  2. Step 2: Convert to fraction form
    20,475.95/30,774.51 = 16,988.58/x
  3. Step 3: Cross multiply
    20,475.95x = 30,774.51 × 16,988.58
  4. Step 4: Simplify right side
    20,475.95x = 522,815,225.10
  5. Step 5: Solve for x
    x = 522,815,225.10/20,475.95
  6. Step 6: Final answer
    x = 25,533.14

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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.