Home / 20,315.34-30,385.53-18,079.74

Finding the Fourth Proportional to 20,315.34, 30,385.53 and 18,079.74

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Solution

The fourth proportional to 20,315.34, 30,385.53 and 18,079.74 is: 27,041.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.34 : 30,385.53 = 18,079.74 : x
  2. Step 2: Convert to fraction form
    20,315.34/30,385.53 = 18,079.74/x
  3. Step 3: Cross multiply
    20,315.34x = 30,385.53 × 18,079.74
  4. Step 4: Simplify right side
    20,315.34x = 549,362,482.16
  5. Step 5: Solve for x
    x = 549,362,482.16/20,315.34
  6. Step 6: Final answer
    x = 27,041.76

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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.