Home / 15,307.17-21,130.37-9,340.98

Finding the Fourth Proportional to 15,307.17, 21,130.37 and 9,340.98

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Solution

The fourth proportional to 15,307.17, 21,130.37 and 9,340.98 is: 12,894.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,307.17 : 21,130.37 = 9,340.98 : x
  2. Step 2: Convert to fraction form
    15,307.17/21,130.37 = 9,340.98/x
  3. Step 3: Cross multiply
    15,307.17x = 21,130.37 × 9,340.98
  4. Step 4: Simplify right side
    15,307.17x = 197,378,363.56
  5. Step 5: Solve for x
    x = 197,378,363.56/15,307.17
  6. Step 6: Final answer
    x = 12,894.50

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Double scale
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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.