Home / 28,608,085.60-42,912,128.40-12,452,279.20

Finding the Fourth Proportional to 28,608,085.60, 42,912,128.40 and 12,452,279.20

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Solution

The fourth proportional to 28,608,085.60, 42,912,128.40 and 12,452,279.20 is: 18,678,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608,085.60 : 42,912,128.40 = 12,452,279.20 : x
  2. Step 2: Convert to fraction form
    28,608,085.60/42,912,128.40 = 12,452,279.20/x
  3. Step 3: Cross multiply
    28,608,085.60x = 42,912,128.40 × 12,452,279.20
  4. Step 4: Simplify right side
    28,608,085.60x = 534,353,803,903,049.25
  5. Step 5: Solve for x
    x = 534,353,803,903,049.25/28,608,085.60
  6. Step 6: Final answer
    x = 18,678,418.80

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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.