Home / 16,890.19-23,312.93-9,720.99

Finding the Fourth Proportional to 16,890.19, 23,312.93 and 9,720.99

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Solution

The fourth proportional to 16,890.19, 23,312.93 and 9,720.99 is: 13,417.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,890.19 : 23,312.93 = 9,720.99 : x
  2. Step 2: Convert to fraction form
    16,890.19/23,312.93 = 9,720.99/x
  3. Step 3: Cross multiply
    16,890.19x = 23,312.93 × 9,720.99
  4. Step 4: Simplify right side
    16,890.19x = 226,624,658.90
  5. Step 5: Solve for x
    x = 226,624,658.90/16,890.19
  6. Step 6: Final answer
    x = 13,417.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.