Home / 13,870.79-20,803.47-11,545.73

Finding the Fourth Proportional to 13,870.79, 20,803.47 and 11,545.73

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Solution

The fourth proportional to 13,870.79, 20,803.47 and 11,545.73 is: 17,316.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.79 : 20,803.47 = 11,545.73 : x
  2. Step 2: Convert to fraction form
    13,870.79/20,803.47 = 11,545.73/x
  3. Step 3: Cross multiply
    13,870.79x = 20,803.47 × 11,545.73
  4. Step 4: Simplify right side
    13,870.79x = 240,191,256.40
  5. Step 5: Solve for x
    x = 240,191,256.40/13,870.79
  6. Step 6: Final answer
    x = 17,316.34

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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.