Home / 13,557.07-20,338.67-7,316.90

Finding the Fourth Proportional to 13,557.07, 20,338.67 and 7,316.90

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Solution

The fourth proportional to 13,557.07, 20,338.67 and 7,316.90 is: 10,977.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.07 : 20,338.67 = 7,316.90 : x
  2. Step 2: Convert to fraction form
    13,557.07/20,338.67 = 7,316.90/x
  3. Step 3: Cross multiply
    13,557.07x = 20,338.67 × 7,316.90
  4. Step 4: Simplify right side
    13,557.07x = 148,815,931.12
  5. Step 5: Solve for x
    x = 148,815,931.12/13,557.07
  6. Step 6: Final answer
    x = 10,977.00

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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.