Home / 13,545.55-20,315.76-4,779.46

Finding the Fourth Proportional to 13,545.55, 20,315.76 and 4,779.46

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Solution

The fourth proportional to 13,545.55, 20,315.76 and 4,779.46 is: 7,168.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.55 : 20,315.76 = 4,779.46 : x
  2. Step 2: Convert to fraction form
    13,545.55/20,315.76 = 4,779.46/x
  3. Step 3: Cross multiply
    13,545.55x = 20,315.76 × 4,779.46
  4. Step 4: Simplify right side
    13,545.55x = 97,098,362.29
  5. Step 5: Solve for x
    x = 97,098,362.29/13,545.55
  6. Step 6: Final answer
    x = 7,168.28

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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.