Home / 28,598.90-42,946.95-21,211.70

Finding the Fourth Proportional to 28,598.90, 42,946.95 and 21,211.70

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Solution

The fourth proportional to 28,598.90, 42,946.95 and 21,211.70 is: 31,853.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,598.90 : 42,946.95 = 21,211.70 : x
  2. Step 2: Convert to fraction form
    28,598.90/42,946.95 = 21,211.70/x
  3. Step 3: Cross multiply
    28,598.90x = 42,946.95 × 21,211.70
  4. Step 4: Simplify right side
    28,598.90x = 910,977,819.32
  5. Step 5: Solve for x
    x = 910,977,819.32/28,598.90
  6. Step 6: Final answer
    x = 31,853.60

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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.