Home / 30,666.02-45,998.57-8,478.90

Finding the Fourth Proportional to 30,666.02, 45,998.57 and 8,478.90

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Solution

The fourth proportional to 30,666.02, 45,998.57 and 8,478.90 is: 12,718.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,666.02 : 45,998.57 = 8,478.90 : x
  2. Step 2: Convert to fraction form
    30,666.02/45,998.57 = 8,478.90/x
  3. Step 3: Cross multiply
    30,666.02x = 45,998.57 × 8,478.90
  4. Step 4: Simplify right side
    30,666.02x = 390,017,232.78
  5. Step 5: Solve for x
    x = 390,017,232.78/30,666.02
  6. Step 6: Final answer
    x = 12,718.22

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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.