Home / 12,307,569.80-18,461,354.70-12,139,608.20

Finding the Fourth Proportional to 12,307,569.80, 18,461,354.70 and 12,139,608.20

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Solution

The fourth proportional to 12,307,569.80, 18,461,354.70 and 12,139,608.20 is: 18,209,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,307,569.80 : 18,461,354.70 = 12,139,608.20 : x
  2. Step 2: Convert to fraction form
    12,307,569.80/18,461,354.70 = 12,139,608.20/x
  3. Step 3: Cross multiply
    12,307,569.80x = 18,461,354.70 × 12,139,608.20
  4. Step 4: Simplify right side
    12,307,569.80x = 224,113,612,899,228.53
  5. Step 5: Solve for x
    x = 224,113,612,899,228.53/12,307,569.80
  6. Step 6: Final answer
    x = 18,209,412.30

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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.