Home / 14,688.52-20,271.12-8,315.08

Finding the Fourth Proportional to 14,688.52, 20,271.12 and 8,315.08

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Solution

The fourth proportional to 14,688.52, 20,271.12 and 8,315.08 is: 11,475.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.52 : 20,271.12 = 8,315.08 : x
  2. Step 2: Convert to fraction form
    14,688.52/20,271.12 = 8,315.08/x
  3. Step 3: Cross multiply
    14,688.52x = 20,271.12 × 8,315.08
  4. Step 4: Simplify right side
    14,688.52x = 168,555,984.49
  5. Step 5: Solve for x
    x = 168,555,984.49/14,688.52
  6. Step 6: Final answer
    x = 11,475.36

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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.