Home / 30,280.95-45,421.44-13,621.52

Finding the Fourth Proportional to 30,280.95, 45,421.44 and 13,621.52

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Solution

The fourth proportional to 30,280.95, 45,421.44 and 13,621.52 is: 20,432.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,280.95 : 45,421.44 = 13,621.52 : x
  2. Step 2: Convert to fraction form
    30,280.95/45,421.44 = 13,621.52/x
  3. Step 3: Cross multiply
    30,280.95x = 45,421.44 × 13,621.52
  4. Step 4: Simplify right side
    30,280.95x = 618,709,053.39
  5. Step 5: Solve for x
    x = 618,709,053.39/30,280.95
  6. Step 6: Final answer
    x = 20,432.29

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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.