Home / 10,555.02-15,830.10-7,289.10

Finding the Fourth Proportional to 10,555.02, 15,830.10 and 7,289.10

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Solution

The fourth proportional to 10,555.02, 15,830.10 and 7,289.10 is: 10,931.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,555.02 : 15,830.10 = 7,289.10 : x
  2. Step 2: Convert to fraction form
    10,555.02/15,830.10 = 7,289.10/x
  3. Step 3: Cross multiply
    10,555.02x = 15,830.10 × 7,289.10
  4. Step 4: Simplify right side
    10,555.02x = 115,387,181.91
  5. Step 5: Solve for x
    x = 115,387,181.91/10,555.02
  6. Step 6: Final answer
    x = 10,931.97

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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.