Home / 18,381,806.40-25,350,379.20-11,506,915.20

Finding the Fourth Proportional to 18,381,806.40, 25,350,379.20 and 11,506,915.20

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Solution

The fourth proportional to 18,381,806.40, 25,350,379.20 and 11,506,915.20 is: 15,869,205.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381,806.40 : 25,350,379.20 = 11,506,915.20 : x
  2. Step 2: Convert to fraction form
    18,381,806.40/25,350,379.20 = 11,506,915.20/x
  3. Step 3: Cross multiply
    18,381,806.40x = 25,350,379.20 × 11,506,915.20
  4. Step 4: Simplify right side
    18,381,806.40x = 291,704,663,742,243.81
  5. Step 5: Solve for x
    x = 291,704,663,742,243.81/18,381,806.40
  6. Step 6: Final answer
    x = 15,869,205.53

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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.