Home / 13,079.40-19,621.02-4,312.20

Finding the Fourth Proportional to 13,079.40, 19,621.02 and 4,312.20

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Solution

The fourth proportional to 13,079.40, 19,621.02 and 4,312.20 is: 6,468.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.40 : 19,621.02 = 4,312.20 : x
  2. Step 2: Convert to fraction form
    13,079.40/19,621.02 = 4,312.20/x
  3. Step 3: Cross multiply
    13,079.40x = 19,621.02 × 4,312.20
  4. Step 4: Simplify right side
    13,079.40x = 84,609,762.44
  5. Step 5: Solve for x
    x = 84,609,762.44/13,079.40
  6. Step 6: Final answer
    x = 6,468.93

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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.