Home / 10,130.55-15,145.87-8,587.77

Finding the Fourth Proportional to 10,130.55, 15,145.87 and 8,587.77

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Solution

The fourth proportional to 10,130.55, 15,145.87 and 8,587.77 is: 12,839.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.55 : 15,145.87 = 8,587.77 : x
  2. Step 2: Convert to fraction form
    10,130.55/15,145.87 = 8,587.77/x
  3. Step 3: Cross multiply
    10,130.55x = 15,145.87 × 8,587.77
  4. Step 4: Simplify right side
    10,130.55x = 130,069,248.01
  5. Step 5: Solve for x
    x = 130,069,248.01/10,130.55
  6. Step 6: Final answer
    x = 12,839.31

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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.