Home / 30,730,368.16-42,416,744.28-20,284,009.44

Finding the Fourth Proportional to 30,730,368.16, 42,416,744.28 and 20,284,009.44

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Solution

The fourth proportional to 30,730,368.16, 42,416,744.28 and 20,284,009.44 is: 27,997,765.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,730,368.16 : 42,416,744.28 = 20,284,009.44 : x
  2. Step 2: Convert to fraction form
    30,730,368.16/42,416,744.28 = 20,284,009.44/x
  3. Step 3: Cross multiply
    30,730,368.16x = 42,416,744.28 × 20,284,009.44
  4. Step 4: Simplify right side
    30,730,368.16x = 860,381,641,389,586.12
  5. Step 5: Solve for x
    x = 860,381,641,389,586.12/30,730,368.16
  6. Step 6: Final answer
    x = 27,997,765.50

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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.