Home / 10,130.30-15,172.16-9,780.10

Finding the Fourth Proportional to 10,130.30, 15,172.16 and 9,780.10

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Solution

The fourth proportional to 10,130.30, 15,172.16 and 9,780.10 is: 14,647.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.30 : 15,172.16 = 9,780.10 : x
  2. Step 2: Convert to fraction form
    10,130.30/15,172.16 = 9,780.10/x
  3. Step 3: Cross multiply
    10,130.30x = 15,172.16 × 9,780.10
  4. Step 4: Simplify right side
    10,130.30x = 148,385,242.02
  5. Step 5: Solve for x
    x = 148,385,242.02/10,130.30
  6. Step 6: Final answer
    x = 14,647.67

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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.