Home / 11,106.04-15,328.10-6,389.40

Finding the Fourth Proportional to 11,106.04, 15,328.10 and 6,389.40

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Solution

The fourth proportional to 11,106.04, 15,328.10 and 6,389.40 is: 8,818.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,106.04 : 15,328.10 = 6,389.40 : x
  2. Step 2: Convert to fraction form
    11,106.04/15,328.10 = 6,389.40/x
  3. Step 3: Cross multiply
    11,106.04x = 15,328.10 × 6,389.40
  4. Step 4: Simplify right side
    11,106.04x = 97,937,362.14
  5. Step 5: Solve for x
    x = 97,937,362.14/11,106.04
  6. Step 6: Final answer
    x = 8,818.39

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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.