Home / 15,420.93-23,129.83-10,455.18

Finding the Fourth Proportional to 15,420.93, 23,129.83 and 10,455.18

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Solution

The fourth proportional to 15,420.93, 23,129.83 and 10,455.18 is: 15,681.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.93 : 23,129.83 = 10,455.18 : x
  2. Step 2: Convert to fraction form
    15,420.93/23,129.83 = 10,455.18/x
  3. Step 3: Cross multiply
    15,420.93x = 23,129.83 × 10,455.18
  4. Step 4: Simplify right side
    15,420.93x = 241,826,639.69
  5. Step 5: Solve for x
    x = 241,826,639.69/15,420.93
  6. Step 6: Final answer
    x = 15,681.72

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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.