Home / 28,518.02-42,777.30-10,985.30

Finding the Fourth Proportional to 28,518.02, 42,777.30 and 10,985.30

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Solution

The fourth proportional to 28,518.02, 42,777.30 and 10,985.30 is: 16,478.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.02 : 42,777.30 = 10,985.30 : x
  2. Step 2: Convert to fraction form
    28,518.02/42,777.30 = 10,985.30/x
  3. Step 3: Cross multiply
    28,518.02x = 42,777.30 × 10,985.30
  4. Step 4: Simplify right side
    28,518.02x = 469,921,473.69
  5. Step 5: Solve for x
    x = 469,921,473.69/28,518.02
  6. Step 6: Final answer
    x = 16,478.05

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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.