Home / 15,503.24-21,386.95-9,211.16

Finding the Fourth Proportional to 15,503.24, 21,386.95 and 9,211.16

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Solution

The fourth proportional to 15,503.24, 21,386.95 and 9,211.16 is: 12,706.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,503.24 : 21,386.95 = 9,211.16 : x
  2. Step 2: Convert to fraction form
    15,503.24/21,386.95 = 9,211.16/x
  3. Step 3: Cross multiply
    15,503.24x = 21,386.95 × 9,211.16
  4. Step 4: Simplify right side
    15,503.24x = 196,998,488.40
  5. Step 5: Solve for x
    x = 196,998,488.40/15,503.24
  6. Step 6: Final answer
    x = 12,706.93

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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.