Home / 10,290.99-15,428.25-9,711.45

Finding the Fourth Proportional to 10,290.99, 15,428.25 and 9,711.45

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Solution

The fourth proportional to 10,290.99, 15,428.25 and 9,711.45 is: 14,559.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,290.99 : 15,428.25 = 9,711.45 : x
  2. Step 2: Convert to fraction form
    10,290.99/15,428.25 = 9,711.45/x
  3. Step 3: Cross multiply
    10,290.99x = 15,428.25 × 9,711.45
  4. Step 4: Simplify right side
    10,290.99x = 149,830,678.46
  5. Step 5: Solve for x
    x = 149,830,678.46/10,290.99
  6. Step 6: Final answer
    x = 14,559.40

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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.