Home / 15,880.04-21,904.79-9,503.11

Finding the Fourth Proportional to 15,880.04, 21,904.79 and 9,503.11

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Solution

The fourth proportional to 15,880.04, 21,904.79 and 9,503.11 is: 13,108.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880.04 : 21,904.79 = 9,503.11 : x
  2. Step 2: Convert to fraction form
    15,880.04/21,904.79 = 9,503.11/x
  3. Step 3: Cross multiply
    15,880.04x = 21,904.79 × 9,503.11
  4. Step 4: Simplify right side
    15,880.04x = 208,163,628.90
  5. Step 5: Solve for x
    x = 208,163,628.90/15,880.04
  6. Step 6: Final answer
    x = 13,108.51

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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.