Home / 30,587,242.77-42,181,054.09-20,551,436.76

Finding the Fourth Proportional to 30,587,242.77, 42,181,054.09 and 20,551,436.76

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Solution

The fourth proportional to 30,587,242.77, 42,181,054.09 and 20,551,436.76 is: 28,341,268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,587,242.77 : 42,181,054.09 = 20,551,436.76 : x
  2. Step 2: Convert to fraction form
    30,587,242.77/42,181,054.09 = 20,551,436.76/x
  3. Step 3: Cross multiply
    30,587,242.77x = 42,181,054.09 × 20,551,436.76
  4. Step 4: Simplify right side
    30,587,242.77x = 866,881,265,600,774.50
  5. Step 5: Solve for x
    x = 866,881,265,600,774.50/30,587,242.77
  6. Step 6: Final answer
    x = 28,341,268.68

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Double scale
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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.