Home / 10,018.86-15,038.66-7,389.30

Finding the Fourth Proportional to 10,018.86, 15,038.66 and 7,389.30

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Solution

The fourth proportional to 10,018.86, 15,038.66 and 7,389.30 is: 11,091.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,018.86 : 15,038.66 = 7,389.30 : x
  2. Step 2: Convert to fraction form
    10,018.86/15,038.66 = 7,389.30/x
  3. Step 3: Cross multiply
    10,018.86x = 15,038.66 × 7,389.30
  4. Step 4: Simplify right side
    10,018.86x = 111,125,170.34
  5. Step 5: Solve for x
    x = 111,125,170.34/10,018.86
  6. Step 6: Final answer
    x = 11,091.60

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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.