Home / 19,443.23-29,140.24-12,420.53

Finding the Fourth Proportional to 19,443.23, 29,140.24 and 12,420.53

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Solution

The fourth proportional to 19,443.23, 29,140.24 and 12,420.53 is: 18,615.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,443.23 : 29,140.24 = 12,420.53 : x
  2. Step 2: Convert to fraction form
    19,443.23/29,140.24 = 12,420.53/x
  3. Step 3: Cross multiply
    19,443.23x = 29,140.24 × 12,420.53
  4. Step 4: Simplify right side
    19,443.23x = 361,937,225.13
  5. Step 5: Solve for x
    x = 361,937,225.13/19,443.23
  6. Step 6: Final answer
    x = 18,615.08

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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.