Finding the Fourth Proportional to 28,168,064,426.64, 38,872,861,138.95 and 15,481,249,782.96
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Solution
The fourth proportional to 28,168,064,426.64, 38,872,861,138.95 and 15,481,249,782.96 is: 21,364,637,056.90
Step by Step Solution
- Step 1: Write the proportion equation
28,168,064,426.64 : 38,872,861,138.95 = 15,481,249,782.96 : x - Step 2: Convert to fraction form
28,168,064,426.64/38,872,861,138.95 = 15,481,249,782.96/x - Step 3: Cross multiply
28,168,064,426.64x = 38,872,861,138.95 × 15,481,249,782.96 - Step 4: Simplify right side
28,168,064,426.64x = 601,800,473,070,403,846,144 - Step 5: Solve for x
x = 601,800,473,070,403,846,144/28,168,064,426.64 - Step 6: Final answer
x = 21,364,637,056.90
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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.