Home / 12,875,306.40-19,312,959.60-8,620,279.20

Finding the Fourth Proportional to 12,875,306.40, 19,312,959.60 and 8,620,279.20

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Solution

The fourth proportional to 12,875,306.40, 19,312,959.60 and 8,620,279.20 is: 12,930,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,875,306.40 : 19,312,959.60 = 8,620,279.20 : x
  2. Step 2: Convert to fraction form
    12,875,306.40/19,312,959.60 = 8,620,279.20/x
  3. Step 3: Cross multiply
    12,875,306.40x = 19,312,959.60 × 8,620,279.20
  4. Step 4: Simplify right side
    12,875,306.40x = 166,483,103,930,320.31
  5. Step 5: Solve for x
    x = 166,483,103,930,320.31/12,875,306.40
  6. Step 6: Final answer
    x = 12,930,418.80

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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.