Home / 12,445.02-18,665.28-5,421.10

Finding the Fourth Proportional to 12,445.02, 18,665.28 and 5,421.10

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Solution

The fourth proportional to 12,445.02, 18,665.28 and 5,421.10 is: 8,130.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.02 : 18,665.28 = 5,421.10 : x
  2. Step 2: Convert to fraction form
    12,445.02/18,665.28 = 5,421.10/x
  3. Step 3: Cross multiply
    12,445.02x = 18,665.28 × 5,421.10
  4. Step 4: Simplify right side
    12,445.02x = 101,186,349.41
  5. Step 5: Solve for x
    x = 101,186,349.41/12,445.02
  6. Step 6: Final answer
    x = 8,130.67

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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.