Home / 14,280.48-19,707.18-8,315.64

Finding the Fourth Proportional to 14,280.48, 19,707.18 and 8,315.64

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Solution

The fourth proportional to 14,280.48, 19,707.18 and 8,315.64 is: 11,475.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.48 : 19,707.18 = 8,315.64 : x
  2. Step 2: Convert to fraction form
    14,280.48/19,707.18 = 8,315.64/x
  3. Step 3: Cross multiply
    14,280.48x = 19,707.18 × 8,315.64
  4. Step 4: Simplify right side
    14,280.48x = 163,877,814.30
  5. Step 5: Solve for x
    x = 163,877,814.30/14,280.48
  6. Step 6: Final answer
    x = 11,475.65

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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.