Home / 13,421,931.04-18,516,372.96-9,069,431.68

Finding the Fourth Proportional to 13,421,931.04, 18,516,372.96 and 9,069,431.68

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Solution

The fourth proportional to 13,421,931.04, 18,516,372.96 and 9,069,431.68 is: 12,511,834.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421,931.04 : 18,516,372.96 = 9,069,431.68 : x
  2. Step 2: Convert to fraction form
    13,421,931.04/18,516,372.96 = 9,069,431.68/x
  3. Step 3: Cross multiply
    13,421,931.04x = 18,516,372.96 × 9,069,431.68
  4. Step 4: Simplify right side
    13,421,931.04x = 167,932,979,522,119.38
  5. Step 5: Solve for x
    x = 167,932,979,522,119.38/13,421,931.04
  6. Step 6: Final answer
    x = 12,511,834.48

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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.