Home / 14,702.48-20,289.18-7,988.21

Finding the Fourth Proportional to 14,702.48, 20,289.18 and 7,988.21

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Solution

The fourth proportional to 14,702.48, 20,289.18 and 7,988.21 is: 11,023.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,702.48 : 20,289.18 = 7,988.21 : x
  2. Step 2: Convert to fraction form
    14,702.48/20,289.18 = 7,988.21/x
  3. Step 3: Cross multiply
    14,702.48x = 20,289.18 × 7,988.21
  4. Step 4: Simplify right side
    14,702.48x = 162,074,281.89
  5. Step 5: Solve for x
    x = 162,074,281.89/14,702.48
  6. Step 6: Final answer
    x = 11,023.60

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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.