Home / 15,368.45-21,200.81-9,389.70

Finding the Fourth Proportional to 15,368.45, 21,200.81 and 9,389.70

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Solution

The fourth proportional to 15,368.45, 21,200.81 and 9,389.70 is: 12,953.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,368.45 : 21,200.81 = 9,389.70 : x
  2. Step 2: Convert to fraction form
    15,368.45/21,200.81 = 9,389.70/x
  3. Step 3: Cross multiply
    15,368.45x = 21,200.81 × 9,389.70
  4. Step 4: Simplify right side
    15,368.45x = 199,069,198.71
  5. Step 5: Solve for x
    x = 199,069,198.71/15,368.45
  6. Step 6: Final answer
    x = 12,953.11

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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.