Home / 15,030.02-20,741.79-8,315.78

Finding the Fourth Proportional to 15,030.02, 20,741.79 and 8,315.78

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Solution

The fourth proportional to 15,030.02, 20,741.79 and 8,315.78 is: 11,475.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.02 : 20,741.79 = 8,315.78 : x
  2. Step 2: Convert to fraction form
    15,030.02/20,741.79 = 8,315.78/x
  3. Step 3: Cross multiply
    15,030.02x = 20,741.79 × 8,315.78
  4. Step 4: Simplify right side
    15,030.02x = 172,484,089.92
  5. Step 5: Solve for x
    x = 172,484,089.92/15,030.02
  6. Step 6: Final answer
    x = 11,475.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.