Home / 12,356,939.40-18,535,409.10-10,656,328.20

Finding the Fourth Proportional to 12,356,939.40, 18,535,409.10 and 10,656,328.20

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Solution

The fourth proportional to 12,356,939.40, 18,535,409.10 and 10,656,328.20 is: 15,984,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356,939.40 : 18,535,409.10 = 10,656,328.20 : x
  2. Step 2: Convert to fraction form
    12,356,939.40/18,535,409.10 = 10,656,328.20/x
  3. Step 3: Cross multiply
    12,356,939.40x = 18,535,409.10 × 10,656,328.20
  4. Step 4: Simplify right side
    12,356,939.40x = 197,519,402,690,866.62
  5. Step 5: Solve for x
    x = 197,519,402,690,866.62/12,356,939.40
  6. Step 6: Final answer
    x = 15,984,492.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.