Home / 14,688.60-20,259.90-8,715.48

Finding the Fourth Proportional to 14,688.60, 20,259.90 and 8,715.48

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Solution

The fourth proportional to 14,688.60, 20,259.90 and 8,715.48 is: 12,021.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.60 : 20,259.90 = 8,715.48 : x
  2. Step 2: Convert to fraction form
    14,688.60/20,259.90 = 8,715.48/x
  3. Step 3: Cross multiply
    14,688.60x = 20,259.90 × 8,715.48
  4. Step 4: Simplify right side
    14,688.60x = 176,574,753.25
  5. Step 5: Solve for x
    x = 176,574,753.25/14,688.60
  6. Step 6: Final answer
    x = 12,021.21

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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.